Study examines how early embryonic development can go awry

A new study in the journal Nature Cell Biology has uncovered information about a key stage that human embryonic cells must pass through just before an embryo implants. The research, led by UCLA biologist Amander Clark, could ...

Image: EveryWear space medicine wearable device

An astronaut in space has many tasks, from monitoring experiments to maintaining equipment to organising the more than 70 000 objects that are on the International Space Station, as well as staying fit and healthy. Astronauts ...

More holiday wish lists go digital

Holly Riefke's two small children still write letters to Santa Claus. Or rather, they print their names on letters Riefke has written on their behalf, and together they drop them into a festive red Macy's mailbox designated ...

Laser sniffs out toxic gases from afar

Scientists have developed a way to sniff out tiny amounts of toxic gases—a whiff of nerve gas, for example, or a hint of a chemical spill—from up to one kilometer away.

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