How One Photo Of A Flower Reignited A Species Debate
A new photo of a long-forgotten flower showed up online. Identifying it means getting into the tricky question of how a species is defined.
7:59
Protecting Sequoias From Wildfire Raises Tricky Questions
Sequoia National Park is largely designated as wilderness. That complicates efforts to protect its iconic trees from worsening wildfires.
17:07
The History Of Teeth, From Ancient Fish To Humans
In “Bite,” author Bill Schutt takes readers on a dental adventure spanning half a billion years and much of the animal kingdom.
What Vampire Bat Teeth Tell Us About Their Evolution
Author Bill Schutt writes about vampire bats’ unusual teeth—and how scientists puzzled over their evolutionary history.
8:51
Releasing Campsite Reservations In Waves Makes Booking Fairer
Some national and state parks are changing the way they open up campsite reservations online to make them more accessible to everyone.
17:23
Don’t Just Walk In The Woods—Touch, Smell, and Taste Them, Too
September’s SciFri Book Club pick, “Forest Walking,” teaches readers how to use all five senses to engage with forests in a deeper way.
If You Were A Scientist, Which Olympic Event Would You Study?
Are you obsessed with precision? Captivated by speed? Intrigued by social dynamics? Find out what sport satisfies your scientific brain.
Explore The Outdoors With SciFri Outside This Fall
On September 28 and October 12, join us outdoors to learn all about a well-loved species of the northeast: American beech trees!
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Deep-Sea ‘Nodules’ May Produce Oxygen, Study Finds
New research suggests that polymetallic nodules found 13,000 feet deep produce “dark oxygen” by electrolyzing water.
9:50
One Bird’s Physics Trick For Flying At High Altitudes
At higher altitudes, the air is less dense, which makes it harder for birds in flight to generate lift. The turkey vulture has a solution.