NASA's method of paying for its giant rocket belongs in the Apollo era
3 April 2019
Contracts that leave NASA meeting all the extra development costs for its Space Launch System make no sense when firms like SpaceX offer fixed-price flights
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Premium
It’s time to change our approach to 'psychosomatic' illness
3 April 2019
Doctors have started making sense of a group of mystery conditions where people experience symptoms, but medical tests suggest nothing is physically wrong
Eurasian hoopoes protect their eggs with a dark foul-smelling goo
3 April 2019
The Eurasian hoopoe is an unmistakable sight. Its zebra-like wing markings and impressive crown delight birdwatchers across Europe, Asia and North Africa
Lighter Earth
3 April 2019
We have sent a large number of spacecraft and satellites into space. This must reduce the mass of the planet, albeit by a small amount. Does this reduction affect Earth's gravity with respect to the sun and moon?
Space reflectors
3 April 2019
Does the space junk orbiting Earth have any effect on the amount of solar energy reaching the surface of our planet, either by absorbing or reflecting it?
Take a bite
3 April 2019
Why aren't hit-and-run attacks common in the animal kingdom? Surely a barracuda or shark could take a meal-sized chunk out of the back or belly of a whale before it could respond. The same goes for smaller pairings of animals.
You say tomato
3 April 2019
What creates accents? Is it purely psychological, or is there some physiological element in play?
Feedback: China plans to clone Sherlock to help sniff out super crooks
3 April 2019
Plus the real dangers of enjoying a hot cuppa, why you’ll need to pack Blistex for your space trip, and the second coming of that supersonic car
From the archives: When oil turned Alaska's coastline black
3 April 2019
The Exxon Valdez oil spill of 1989 was one of the worst environmental disasters on record – but 30 years on, some good has come come of it
Speaking at least one other language may make us more humane
3 April 2019
Forget UN peace-keepers. A new book reckons a deep knowledge of another language could help us all connect emotionally and break down divisive nationalism
