Giving transplanted cells a nanotech checkup

Researchers at Johns Hopkins have devised a way to detect whether cells previously transplanted into a living animal are alive or dead, an innovation they say is likely to speed the development of cell replacement therapies ...

Turning algae into fuel

Blue-green in colour, slimy and present in seas and fresh water worldwide - the presence of microalgae is not generally met with great excitement. But this may be about to change. A team of European scientists is on a mission ...

Ocean changes almost starved life of oxygen

Chemical changes in the oceans more than 800 million years ago almost destroyed the oxygen-rich atmosphere that paved the way for complex life on Earth, new research suggests.

Oceans saved us, now we can return the favor

Humanity must heal oceans made sick by climate change, pollution and overfishing in order to rescue marine life and save ourselves, experts warned ahead of a major UN conference opening Monday in Lisbon.

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