Why do we bleed? A hematologist explains how the body prevents blood loss after injury
Blood plays a vital role in keeping us alive, from delivering oxygen to the body’s organs to fighting off infections.
Jan. 31, 2022 • ~6 min
Why do plants grow straight?
Plants need light to feed themselves, so they grow in ways that help them collect as much of it as they can. Sometimes that’s straight up, but not always.
Jan. 17, 2022 • ~4 min
How much candy do Americans eat in a whole year?
A healthy diet can include some candy. But if you eat too much, it can interfere with your appetite for the stuff your body actually needs.
Jan. 10, 2022 • ~6 min
Why can’t we throw all our trash into a volcano and burn it up?
Volcanoes might seem like nature’s incinerators, but using them to burn up trash would be dangerous and disrespectful to indigenous people who view them as sacred.
Jan. 3, 2022 • ~5 min
What's the record for how long it's ever rained without stopping?
Extended periods of rain are most likely found in locations where mountains are near oceans.
Dec. 20, 2021 • ~6 min
Have we made an object that could travel 1% the speed of light?
The fastest things ever made by humans are spacecraft, and the fastest spacecraft reached 330,000 mph – only 0.05% the speed of light. But there are ways to go faster.
Nov. 15, 2021 • ~5 min
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