353 records found. Displaying 193 - 216.
Did you know that about 40 percent of the world's population lives without toilets? That's more than two billion people, most of whom live in rural areas or crowded urban slums. And according… Read More →
From the Series Sandra Markle's Science Discoveries
Little brown bats do us a big favor. They eat huge numbers of insects! That helps limit the spread of diseases and the damage that insects do to farm crops. But in recent years, large… Read More →
"I didn't hear the word transgender until I was eighteen, when a person I was dating came out as trans. My boyfriend came out as my girlfriend, and I thought, 'What . . . is that?' She said… Read More →
The octopus spies a nice, tasty mantis shrimp. It swims over for a closer look at the small creature. Then—WHAM!—the mantis shrimp strikes a nasty blow with its hammer-like forelimb. The… Read More →
Huge, towering clouds build up in the sky—it's a super cell. The Doppler radar indicates that the system is rotating. But is there a funnel? Is it touching the ground? Only a storm chaser can… Read More →