Take a deep breath - why the world is running out of helium
A US law means supplies of the gas - a vital component in MRI scans - are vanishing fast.
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Latest from National Aeronautics and Space Administration
Scientists race to space probe landing site
A Japanese space capsule may contain the first-ever asteroid samples that could provide clues into the creation of the solar system.
British scientists begin project to search for life on Mars
British scientists have started an ambitious project aimed at searching for signs of extraterrestrial life on Mars.
2010 is 'warmest year ever'
Climate change advocates will be buoyed by data which has emerged from the US today.
UFO-chasing hacker: Nasa security 'truly shocking'
Accused of "the biggest military hack of all time" Gary McKinnon is, according to the US, the most dangerous hacker in the world.
<i>Gwynne Dyer:</i> Why first man on Mars will probably be Chinese
The US will be a hitch-hiker on other nations' space programmes, writes Gwynne Dyer.
Obama: Era of 'monopoly money' over
US President Barack Obama has unveiled a budget that forecast a record deficit of $1.56 trillion (NZ$2.2 trillion) this year.
Flying cars, heated pants: Why can't we buy this stuff?
Jet packs! Motors that run for ever! Centrally heated pants! We've been promised these wonders, and many more, for ages. So what's the hold-up?
Nasa discovers huge ring of ice orbiting Saturn
A giant ring so faint it is all but invisible to conventional light telescopes has been discovered around Saturn.