10:33
SciFri’s Winter Nature Photo Contest Winner…Revealed!
Winter Nature Photo Contest judge John Weller discusses your top shots.
Make a Wire Critter That Can Walk on Water
Learn how insects have inspired engineers to make a robot that walks on the surface of water. Design your own water-walking critter using thin wire, and test its effectiveness: how many paperclips can it hold up using surface tension?
This Fish Sucks
Adam Summers of the University of Washington’s Friday Harbor Labs, details how the Northern Clingfish takes the art of suction to new heights.
How Dogs Are Helping Us Understand Ourselves
Dogs are helping improve our understanding of various human maladies and how we might treat them.
8:43
Stem Cell Research Update
Researchers in a recent study report creating stem cells in 30 minutes through an acid bath.
Test the Finger Wrinkle Hypothesis
Perform an experiment to determine whether smooth or wrinkled fingers are better at holding wet objects. The experiment requires only a water bottle, paperclip, and plastic ruler.
Downloads: Video, student data sheet, illustrated instructions
Olympic Ski Jump Training in the Wind Tunnel
Physics Professor Adam Johnston, explains how, with the help of a wind tunnel, U.S. ski jumpers can fine tune the physics of their jumps along with the flow of air around their bodies in order to attain Olympic gold.
9:12
What Pulled the Plug on the Bioluminescent Bay?
The glowing bioluminescent bay near Fajardo, Puerto Rico went dark for more than a week in November.
8:10
How Fins Gave Way to Feet
Tiktaalik roseae was a fish that had scales, gills, and limb-like front fins.
An Ancient Flower, Preserved in Amber
A recently described 100 million-year-old fossil is the most complete flowering plant from the Cretaceous discovered.