How Hatena turns a swallowed alga into a photosynthetic partner

Hatena can turn a swallowed alga into a living solar partner

The tiny organism Hatena can swallow a green alga without digesting it. The alga stays alive inside and provides energy from photosynthesis, while Hatena changes its body and loses the structures it normally uses to eat. A former meal becomes a partner.

A helicopter rotor can limit speed

As a helicopter moves faster, one rotor blade moves forward through the air while the blade on the other side moves backward. The forward-moving blade can face extreme drag and vibration; the backward-moving blade can lose lift and stall. This imbalance can make more speed unsafe before engine power runs out.

A tiny human relative survived until about 50,000 years ago

Homo floresiensis was a small human relative that lived on the Indonesian island of Flores until roughly 50,000 years ago. It stood about one meter tall and had a brain volume of only about 380 cubic centimeters.

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

Download Hence for free

How Hatena turns a swallowed alga into a photosynthetic partner

Hatena can turn a swallowed alga into a living solar partner

Keep exploring