
ENVIRONMENT
How Spiders Win the Lottery
On a cloudy spring day, a little spider scales a tall blade of grass. At the peak, the spider arches up, points its abdomen up to the sky and begins releasing strands of silk from its silk glands. Tens of thousands of strands fill the air, fanning out and
8 Extreme Weather Events As Seen From Space
No matter how things look from the ground, these events look drastically different, even surprisingly peaceful, from above.
The Muppets Celebrate Earth Day (in 1990)
On April 22, 1990, the Muppets celebrated Earth Day with Carl Sagan, Neil Patrick Harris, Downtown Julie Brown, and many, many more.
What Do Those Recycling Symbols and Codes Mean?
Earth Day is here again, serving as an annual reminder of the need to reduce, reuse, and recycle our way to a better planet.
How Much Does a Cloud Weigh?
It's time to pull out those calculators and do the math with the density and volume to determine the total water content of the cloud.
Climate Change vs. Global Warming: What's the Difference?
While global warming is a specific function of trapped greenhouse gases, climate change is more complicated.
Operation Migration: Saving the Whooping Crane
Dan Lewis runs the popular daily newsletter Now I Know ("Learn Something New Every Day, By Email"). We've invited him to share some of his stories on mental_floss this week.
Painting Frogs, Licking Wounds & Other Adventures with Poisonous Animals
There are plenty of intrepid scientists doing strange-sounding field work. Here are two.
Has a U.S. River Run Backwards Before?
Last month, the U.S. Army Corps of Engineers announced that if water in Lake Michigan drops below the level of the Chicago River, the River could reverse course and begin flowing backward to its source. Has an American river ever done an about-face like t
The Day The Mississippi River Ran Backward—and How It Led to The Trail Of Tears
New Madrid seismic zone. Red circles identify earthquakes that occurred between 1974 and 2002 with magnitudes 2.5 and larger. Green circles denote earthquakes that occurred before 1974. The larger the circle, the larger the earthquake. Source: USGS In 18
John James Audubon's Discovery of a Bird That Might Not Exist
Wikimedia Commons “It was in the month of February, 1814, that I obtained the first sight of this noble bird, and never shall I forget the delight which it gave me.” That’s John James Audubon, the American naturalist and artist, writing in The Birds of
Messing with Mother Nature: The Macquarie Island Ecosystem
The story of the Macquarie Island ecosystem may remind you of the song about the woman who swallowed a fly. The island was exploited mercilessly, but various plans to repair the damage had their own unintended consequences. Introducing a non-native specie
Exclusive: Mike Rowe Talks "Human Planet"
NOTE: My interview with Mike Rowe appears below a bunch of discussion of the documentary Human Planet. Jump to the "Interview" heading if that's what you're here for. Human Planet premieres Sunday, April 10 in the US on Discovery. Two episodes air e
Going Solar
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Toxic Towns: 6 Cases of Polluted Places
Every once in a while, an environmental disaster makes big news, but the effects remain years after the headlines have faded. Here are six stories of what human activity did to mess up Mother Nature. 1. Mossville,
Extremophiles: Life on the Edge
The possibility of life on Mars and other planets and moons has been debated for as long as we have known about those planets. Now that water has been found on the Mars, that possibility is more believable than ever. Sure, conditions are fierce on Mars, b
"The Botany of Desire" Documentary, TONIGHT at 8pm on PBS
Update: the entire documentary is now available online for free! A new PBS* documentary, The Botany of Desire, premieres Wednesday night (tonight!) at 8pm on PBS stations throughout the US. It's based on the popular Michael Pollan book of the same name
10 Unusual Playgrounds From Around the World
Playgrounds have come a long way since the early days of hot, steel slides and open-backed infant swings. Here's some that are more than just seesaws and monkey bars
4 Creative Law Enforcement Techniques in the National Parks
BY BRIAN
Messing with Mother Nature: 5 Cautionary Tales
The balance of nature took about four billion years to settle into the pattern the earth now holds. When humans change one thing, large or small, it begins a chain reaction that we often can't foresee. We don't know everything there is to know about Mothe
Made in America: The world's fastest electric car
Some of you who've been with us from the beginning might recall Mangesh's post a couple years back about Tesla's high-end electric sports car, made in Silicon Valley. In the post, Mango wrote mental_floss' favorite inventor Nikola Tesla, who famously drea