Ten steel balls roll between the inner and outer rings within a yoyo’s shell. They work together to reduce friction, allowing the yoyo to keep spinning at the bottom of the string for over 10 minutes.
When we feel extreme emotions or temperature, our sympathetic nervous system releases a chemical called norepinephrine. Adrenaline floods the body and stimulates tiny muscles in the skin called arr...
Cara Santa Maria conducts a simple experiment to see how our brains can be manipulated to eat less. Ever heard the phrase "your eyes are bigger than your stomach?" There’s a bit of truth to that....
To effectively feed their babies, dung beetles must push their dung balls in a straight line, up to 100 yards from where they first started. Since they don’t have GPS, dung beetles use the stars ...
Scientists expected Pluto’s surface to look like other icy planets, a surface of ice with a few craters here and there. Instead, they found ginormous mountains as tall as the Rockies.
150 gallons per second pour over the top of Niagara Falls. As the water crashes over the top, all the potential energy is converted into kinetic energy and comes down with tremendous force.
When it was originally built, the Hoover Dam was the largest concrete structure in the world. It weighs 6.6 million tons and stands 700 ft tall. The biggest challenge engineers faced while building...
When an egg is submerged in boiling water, the heat tangles its proteins, causing them to clump together into new forms. If you untangle the proteins, you uncook the egg.
in February 2015, a milky white rain falls during rush hour across the Pacific Northwest. When scientists ruled out volcanic and wildfire ash, they scrambled to find out what caused this strange pr...
Ten steel balls roll between the inner and outer rings within a yoyo’s shell. They work together to reduce friction, allowing the yoyo to keep spinning at the bottom of the string for over 10 min...
The stadium's twin arches soar over 300 ft above the playing field. Together, they distribute 19 million pounds of thrust into four concrete abutments. The superstructure supports a colossal retra...
The surface temperature on Venus is over 860°F--hot enough to melt lead. Despite the brutal surface climate, the Venusian clouds exist in pressures and temperatures quite similar to those on Earth....