Natural Science
Deepen your understanding of the natural world by learning about biology, chemistry, physics, and geology.
![looking up at blue sky and white clouds from the base of a circle of pine trees covered in snow](http://www.cellsaddle.com/thmb/KO474ZN6Alj_x6Q1NxTjIiuMG28=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/Look_up_in_winter_forest-b5a8a2c01bfe4723912b16ec0c3f5cca.jpg)
Trees Form Friendships and Remember Their Experiences
![Sunrays Through Treetops](http://www.cellsaddle.com/thmb/2UN3HzHQy-B6JmfBGY_nSsXmY9I=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/sunrays-through-treetops-461564763-8951e054e502495eb2a308bc460155a9.jpg)
94% of Americans Agree This Nature-Based Superhero is Good for the Planet
![A turtle on the beach walking toward the water](http://www.cellsaddle.com/thmb/AqK9GW6_XfOwp7wjpPTdzYGorxw=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/Fx5j_GwS-1e9f9ddbd5ca4298a614c14aa45e18f7.jpeg)
Dozens of Cold-Stunned Sea Turtles Released Into the Wild After Months of Rehab
![a modern building with mossy stones in front](http://www.cellsaddle.com/thmb/nR3Tpx4J51SAluXDcecqnxVv9n8=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/rewildingcentre-a138992330984e16be1a2279afac2342.jpg)
世界上第一个在苏格兰野化中心打开
![Medieval manuscript illustrations showing luan eclipses.](http://www.cellsaddle.com/thmb/L3nI-i9E4qy1w3mqKVATmIAjB2k=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/monks-eclipses-2169eb01ceb44a0aa6f1830a06afd3b0.jpg)
Sky-Gazing Medieval Monks Shed Light on Volcanic Mysteries
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![Hand holding wilted vegetables in own garden.](http://www.cellsaddle.com/thmb/KpK7TSakt5hguQcwA4pFpkSZ9Vs=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/hand-holding-wilted-vegetables-in-own-garden--1329924478-0abaaf82de204f2a97798b4d4ce03256.jpg)
Stressed Plants Make Sounds, We Just Can't Hear Them
![](http://www.cellsaddle.com/thmb/YCXo-_qSKmo6UjJr6EI0TSLKflo=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__treehugger__images__2016__06__slime-mold-928eb7f720e64dff8916a0982e812270.jpg)
The Uncanny Intelligence of Slime Mold
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10 Women Who Changed the Way We See Nature
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Strange, Ethereal 'Fairy Lantern' Presumed Extinct is Rediscovered After 30 Years
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Here's a Wild Reason To Watch More TV
![Celtic Rainforest in summer, Argyll, Scotland](http://www.cellsaddle.com/thmb/518ljvJ_ovXhbB5GxOMe_4hsb4E=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/celtic-rainforest-in-summer--argyll--scotland-1208908793-66157eb3c60f480398e7fab090d32ec0.jpg)
Tropical Rainforests Are Not the Only Rainforests Under Threat
![](http://www.cellsaddle.com/thmb/glikwxyAID2_XuLEmF4HLzgCoZ0=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2018__11__wonders-solar-system-53c29f39837645729c8a5974f30b7307.jpg)
10 Wonders of the Solar System
![groundhog surrounded by dry leaves and small plants](http://www.cellsaddle.com/thmb/vDayRI-Ycxxf8REmQ3JCodGsFIs=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-855440092-9905ec10d9f74150ac37755640dbaec4.jpg)
Secrets of the Groundhog Revealed
![A wildly starry night sky over mountains](http://www.cellsaddle.com/thmb/FZXBIeIUpUj0KgZjD_Zn7XzboVQ=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-531503110-f91ceb3d323b4f5c8fa959227180fccc.jpg)
Stars Are Disappearing From Sight at an Astonishing Rate
![Brazilian Araucaria plant shows fractals in nature](http://www.cellsaddle.com/thmb/rDMUpKBcDFHm7qOtVa1_BBhJX9M=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-551860909-72d4c23c36df49418348bf4961cc9841.jpg)
9 Amazing Fractals Found in Nature
![Microorganisms in a super-heated hot spring](http://www.cellsaddle.com/thmb/vzhWfkg1gizyRbc8vcvXEVmfV3w=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-1222578762-141047023d26490e821a188a81c65d42.jpg)
Archaea vs. Bacteria: What Are the Differences?
![](http://www.cellsaddle.com/thmb/mbYRO0CO2C9odVtm4tdPdB0b7tE=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2016__02__charles-darwin-wicker-chair-1880-e4509b14f17849d6b4d601460e6a7f64.jpg)
7 Surprising Facts About Charles Darwin
![MONARCH BUTTERFLY.Danus plexippus](http://www.cellsaddle.com/thmb/qu7mlzYQNzKZh9jNtuu-ImF8SsE=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/monarch-butterfly-danus-plexippus-825041618-7f2478cb28ce49c2bc46fdcfbf06afea.jpg)
What Is an Indicator Species? 10 Key Examples
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15 Taiga Plants That Thrive in the Boreal Forest
![leucistic albatross](http://www.cellsaddle.com/thmb/m7H9yQchJmzs9fsBl1MYZZAYkQM=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2015__02__leucistic-albatross-cb3c0eee459e4bd8be7d4c7a0a6f219d.jpg)
Leucism vs. Albinism in the Animal Kingdom
![A diversity of large animals in an African grassland.](http://www.cellsaddle.com/thmb/csBVuqnLmXpv_uWMyeyg66rLZC8=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-900700320-b1b73ac1c38e434396c3cc48b8e640d3.jpg)
3 Types of Biodiversity: Overview and Importance
![Indian flying fox](http://www.cellsaddle.com/thmb/MZMNWOQrUtNApTm7hbswFvjUvhQ=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/indian-flying-fox-164768878-fc812155498a4e78aa4160a36b2a53fc.jpg)
8 Fascinating Examples of Convergent Evolution
What Is Selective Breeding (Artificial Selection)?
![Tourists taking photos of an enormous flower that towers over them all](http://www.cellsaddle.com/thmb/VLcZIkiVQ-aWx2nDnSoNhkK5CMs=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-585568550-fbf059a9b4644cda96f263bd7550d7a6.jpg)
10 of the Largest Living Things on the Planet
![An underground cave that houses the thermal aquifer situated a few tens of meters from the surface.](http://www.cellsaddle.com/thmb/w_KPeyr4fmAPSeYAHtF6i5JuALE=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-656491172-01487e5add3241378fc71bd9a4fce510.jpg)
What Is Fossil Water? Geology and Renewability
![先锋物种如何恢复生态系统吗llustration](http://www.cellsaddle.com/thmb/r8piPd7sFGRXkN2Y1pQRkLrCbRs=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/what-is-a-pioneer-species-5089870-ADD-Color1-fa50532681e0428b9aa429422afc4152.jpg)
What Is a Pioneer Species?
![Cluster of Panellus stipticus on a tree, glowing green](http://www.cellsaddle.com/thmb/DydRmjT9ayTblRxSexFUoWF8DOM=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/9-42c2c834f16841f39daee0625f769837.jpeg)
10 Bioluminescent Mushrooms That Glow in the Dark
![Qeqertaq Avannarleq](http://www.cellsaddle.com/thmb/MqRNhi4wcXOBa-zVhmPhAxRRRps=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/QeqertaqAvannarleq-e95b8006562c4be986225630e2c55383.jpeg)
Mysterious 'Ghost Island' Revealed to Be Rare Iceberg in Disguise
![The full moon rises over the hills shrouded in smoke from wildfires on July 22, 2021 in Bly, Oregon. The Bootleg Fire, which started on July 6th near Beatty, Oregon, has burned over 399,000 acres and is currently 38 percent contained.](http://www.cellsaddle.com/thmb/aYI3A4xVXSqAETwJPiR3WBTXxoQ=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-1234121501-d7f06f3bbdd844e29434f5cad7162298.jpg)
Smoke From US Wildfires Is Turning the Moon an Eerie Color
![土星](http://www.cellsaddle.com/thmb/LnsLgEqcaJBCC2ZLljLUUYMjbR0=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2014__10__saturn-0d7479409454408d9258e0c4b2261ea8.jpg)
9 Interesting Space Noises From NASA's SoundCloud
![students in school all raise hands to ask a question](http://www.cellsaddle.com/thmb/Ok99PGJadIo3WOpgNOn1sz3i2hw=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-548929059-0662f57cb6c84ca18fb803cf40520c8a.jpg)
6 'Stupid' Questions That Aren't Stupid at All
![Historic Art Deco District in South Beach, Miami, USA](http://www.cellsaddle.com/thmb/G0rDIo4bq4HZ6V9YDXPvyMwbujs=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/historic-art-deco-district-in-south-beach--miami--usa-667865866-191bfa9a41eb43cd9a51cffd28517d68.jpg)
Miami Beach to Swap Out Palm Trees
![](http://www.cellsaddle.com/thmb/DRGIStWnof-nepT95aA6A_JF41Q=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2019__12__SolarEclipseShroudedInCloudsJapan-c1b95580d26f4aa493bd00ef49a9e25c.jpg)
8 Images of Solar Eclipses
![](http://www.cellsaddle.com/thmb/yTgq3tg28EnMJpZfk3nyybeHsBg=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2020__02__NeanderthalSkullOnDisplay-ced757d3a84d4e5696dcaa23adddbd90.jpg)
Cain and Abel Mystery Solved?
![](http://www.cellsaddle.com/thmb/Fiocy0SzbRHIreWWNYzKZkwLDJ8=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2018__10__MacroPhotoOfMulticoloredJumpingSpider-a8fcdd9df2584f36ada1a414fe8b51f1.jpg)
8 Superlative Spiders
![Pando aspen grove](http://www.cellsaddle.com/thmb/_cKJRoVd80OpuGcFUAmoAiiTjo0=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/Pandoaspengrove-1ef8da57d27b4d0a96579eaf21d375d0.jpg)
This 80,000-Year-Old Aspen Grove Clones Itself
![Elevated view of flowering plants and shrubs on a slope, two kayakers on a narrow river and grassland.](http://www.cellsaddle.com/thmb/jpHaAeqyRUPgL-1SUavvEL1s4ak=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-1356929165-9cda1de93c134a22b5887862bf763adb.jpg)
Edge Effects: Habitat Biodiversity and Human Interference
![](http://www.cellsaddle.com/thmb/iUHOeI0uQCGDOsRfpTIoKByGIE4=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2015__09__PhasesOfLunarEclipseDecember2011-65d056da7a134ecbacfc7a69cb96f53d.jpg)
9 Things You Didn't Know About Lunar Eclipses
![Cypress swamp with vegetation emerging from the water](http://www.cellsaddle.com/thmb/ai-UiMC6pKIJa2IyrLdBqGAizaU=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/8-ba0b26a865bd4c54a779a8e2b7eeab35.jpg)
Freshwater Biome: Types, Plants, and Wildlife
![neodymium is a magnetic chemical element with the symbol Nd, in solid state. It is part of the rare earth group, used in the technology industry](http://www.cellsaddle.com/thmb/kyMiXZcyNr9Sb10c8WzQTX19IIM=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/neodymium-is-a-magnetic-chemical-element-with-the-symbol-nd--in-solid-state--it-is-part-of-the-rare-earth-group--used-in-the-technology-industry-1298342282-8401c5b7cc8a45e09904522a07febfbc.jpg)
What Are Rare Earth Metals?
![Clownish swimming in blue sea anemone](http://www.cellsaddle.com/thmb/CfV7Fjed0SigrGFDd3EsQ5lb2qM=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/3-3612f0362edd4dbcb192589a466f2cb4.jpg)
Marine Biome: Types, Plants, and Wildlife
![Lesser burdock burrs hooked together lead to Velcro](http://www.cellsaddle.com/thmb/Ru_gO-f2jTRYP4t6SJe928r2DA4=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/lesser-burdock-burrs-hooked-together-lead-to-velcro-493163094-31456f56d67e48568236f829ba68489b.jpg)
8 Amazing Examples of Biomimicry
![Venus illustration surrounded by starry sky](http://www.cellsaddle.com/thmb/bmvL4jgZHDsWN0DKVvBZ275L_tE=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/7-cf0b8f12ec4c4e75b6c6d392c7d05009.jpg)
8 Surreal Images of Venus
![El Gran Abuelo cypress in Chile](http://www.cellsaddle.com/thmb/w3VGD8QZqETZ8wzu438vOS8eAFA=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/_El_Gran_Abuelo_._Alerce_Milenario_de_3.500_anos_aprox-4ff72448151142dbb5cab3311ffbe7c1.jpeg)
Chile May Be Home to the World’s Oldest Tree
![](http://www.cellsaddle.com/thmb/uNNWk2qbC3_YoAnRLCXY5Zrz1jQ=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__treehugger__images__2018__06__Solar-System-2d9fb2ca86ba4c6a93f4d079583011ed.jpg)
It's the Summer Solstice! Here's What to Know
![Glue pouring out of bottle onto table](http://www.cellsaddle.com/thmb/uKxu12Ppd_cP30au3H-b9IsBNF8=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-114396929-da23c8c8b73d4d82b33f6f81295652bd.jpg)
Is Glue Sustainable?
![Dandelion seeds blowing](http://www.cellsaddle.com/thmb/Cc95VRX88jtINrtF-vFkDJiml4M=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/dandelion-seeds-blowing-635ba932fb254a97b627e6551d860734.jpg)
How Dandelions 'Decide' to Spread Their Seeds
![Frosted tundra rose](http://www.cellsaddle.com/thmb/iuX5onhMKO6GYk6wZSBrmrjVqOM=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-901482062-6470b1099c6a47a881f9a22d7bca0d0a.jpg)
15 Unique Plants That Flourish in the Tundra Biome
![Aerial view of a surfer riding an ocean wave.](http://www.cellsaddle.com/thmb/o7_jtxPjQzvB91185GZreRsGh8s=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-999984172-67c189dff547488095227056d32c721c.jpg)
What Causes Waves in the Ocean? Energy Analysis and Wave Types
![river view of Guangxi](http://www.cellsaddle.com/thmb/zcXCHd7o8_0-ujTa5MoZGBLMXiM=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/riverviewofGuangxiregionofChina-c3821238c4cd4c2f9f8f909c619a4f45.jpeg)
Sprawling Ancient Forest Discovered in Remote China Sinkhole
![A male and female Mandarin duck](http://www.cellsaddle.com/thmb/I-bFFZhG0bbwXtyoyU1cH5V2UIA=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-546289571-1f3430ddba3e448fba08f37bbbf3935a.jpg)
9 of the Most Dramatic Examples of Sexual Dimorphism
![A large school of clear jellyfish with yellow center tentacles floating in blue water](http://www.cellsaddle.com/thmb/DSlfFYtYY7t11m-y38vAEIBQIPg=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2017__05__YellowTintedYellowGlassJellyfish-12bb63d588314dff9f3ba39669aa8fc9.jpg)
11 Intriguing Transparent Animals
![Blue Tears bioluminescent algae in Taiwan](http://www.cellsaddle.com/thmb/_FyiMe7k3bhzFVX8KyomTXTqLYQ=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-583755006-334a1131cae64ee2b265bfe9c7a67355.jpg)
Bioluminescent Algae: Definition, Causes, and Toxicity
![golden frog in a green aloe plant](http://www.cellsaddle.com/thmb/WNujBlFMnqYF7uf5OcHmt_Z-uss=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/__opt__aboutcom__coeus__resources__content_migration__mnn__images__2015__02__firstfrog-3d42961c881d42aea693aeecf5c14056.jpg)
10 Golden Animals Touched by Midas
![C. Militaris fungi wired for sound](http://www.cellsaddle.com/thmb/y4-LeU33SBhDAKPIP1PorWFG-1w=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/shroom1-f90a901c6c7446849dc76baaaa143219.jpg)
Mushrooms May Talk to Each Other Using Their Own Fungal Language
![Grasslands](http://www.cellsaddle.com/thmb/YHiceuCQvlLiKC4h1SR85cWRUN8=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/prairie-dogs_grassland-56a09a755f9b58eba4b1fd98.jpg)
Characteristics of Temperate Grassland Biomes
![Honey Bee](http://www.cellsaddle.com/thmb/wpijp8vHGGxmrYD9585naxlV9sc=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-588276220-5c252bb746e0fb0001ea7c54.jpg)
What Does Niche Mean in Ecological Biology?
![Temperate deciduous forest in autumn](http://www.cellsaddle.com/thmb/Y_n5cb7GoyI6EshVDFkoQ5glfuE=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-170074807-fc568317496947adb9a5dec71be44380.jpg)
Temperate Forests: Climate, Locations, Wildlife
![A silvery blue and brown polka dotted bioluminescent bobtail squid sitting on the ocean floor.](http://www.cellsaddle.com/thmb/96_Zzj34Ni15mZric_DrvZbIJ-E=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-520964980-3cbecff770ed4728a826b4ada9bce7fb.jpg)
8 Brilliant Bioluminescent Animals
![Tundra](http://www.cellsaddle.com/thmb/lC0Q8JsstCG02VA0GH5a7ugQnpU=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/tundra-climate-5be07fabc9e77c0051e2145d.jpg)
Tundra Land Biome Description and Characteristics
![Close-up of a full moon over a wheat field at dusk.](http://www.cellsaddle.com/thmb/VgxUVl1Z_noV7sXSoUW8KlaDnK4=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/GettyImages-1219675985-6deb726d71a649daac5b96a7041d4724.jpg)
What Is a Harvest Moon?
![goats and sheep stare at camera](http://www.cellsaddle.com/thmb/eFFVybWNL4InVmx1KseWJ0zau8E=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/goatsandsheep-31561f526a0347e3a9c722bf678ae646.jpg)
The Difference Between Sheep and Goats
![A vintage scientific illustration of a giant worm](http://www.cellsaddle.com/thmb/oHHxjlqixWU3qHMqU2Ep1tU3YXs=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/giant-worm-06b4d513ddf74db188e2b703e1db09b8.jpg)
World's Largest Earthworm Can Grow to 9-Feet Long
![Savanna Lions](http://www.cellsaddle.com/thmb/1LR6Urt_CQilBixU8qM1y5EKfgU=/400x300/filters:no_upscale():max_bytes(150000):strip_icc()/lions-on-savanna-56a09a753df78cafdaa327a6.jpg)
Savanna Biome: Climate, Locations, and Wildlife