termite workers burst tunnel defense

Some termites burst to block nest tunnels

Some termite workers burst inside nest tunnels, blocking the passage with their bodies. The defense creates a one-for-one exchange between defenders and attackers, making invasion costly for predators.

Ice redirected the Rhine through the English Channel

About 450,000 years ago, ice blocked the northern North Sea and forced the Rhine through the English Channel. The river’s mouth lay near Brest, and the Thames and Seine became tributaries of the Rhine.

Sandhoppers use the Sun and an inner clock to find the sea

12-hour shift

Sandhoppers use both the Sun's position and an internal clock to work out which direction leads toward the sea. When researchers shifted their day-night cycle by 12 hours, the animals went the wrong way and moved farther up the beach.

Like this? There’s a whole feed of it. Replace empty scrolling with things worth knowing.

Download Hence for free

termite workers burst tunnel defense

Some termites burst to block nest tunnels

Keep exploring