Nuclear scientists hail US fusion breakthrough

Nuclear scientists using lasers the size of three football fields said Tuesday they had generated a huge amount of energy from fusion, possibly offering hope for the development of a new clean energy source.

'No time to waste' warns Japan climate activist

Kimiko Hirata has spent nearly half her life fighting to wean Japan off its dependence on coal, and now isn't the time to slow down, the award-winning activist warns.

A new era of spaceflight? Promising advances in rocket propulsion

The US Defense Advanced Research Projects Agency (Darpa) has recently commissioned three private companies, Blue Origin, Lockheed Martin and General Atomics, to develop nuclear fission thermal rockets for use in lunar orbit.

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