If you jump out of bed too quickly, you might feel a bit light-headed. That's because when you're lying down, gravity causes your blood to pool in the lower parts of your body rather than in your ...

You probably don’t look like an insect. You don’t have feelers or wings. You keep your skeleton inside your body instead of on the outside. But what about blood? Do insects have blood like yours? I ...

Imagine you are flipped upside down and standing on your head. After a few seconds, you would feel pressure in your head due to an increased blood flow. Humans and other vertebrates are known to have ...

BLACKSBURG — Insects do all sorts of acrobatics, buzzing about flowers or creeping along the undersides of leaves. But until recently, no one paid much mind to how gravity affects their tiny bodies.

How do insects control the effects of gravity when they climb a tree or hang upside-down waiting for prey? They don't have closed circulatory systems that restrict fluid flow to certain parts of the ...