Uncategorized
- Life
How plant ‘muscles’ fold up a mimosa leaf fast
A mimosa plant revs up tiny clumps of specially shaped cells that collapse its leaflets, though why isn’t clear.
- Humans
50 years ago, scientists debated when humans first set foot in North America
In 1973, archaeologists debated when people first arrived in the Americas. Mounting evidence suggests its much earlier than they thought.
- Animals
A newfound ‘croakless’ frog may communicate via touch
A newly discovered frog species in Tanzania joins a rare group of frogs that don’t croak or ribbit.
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