They suggest selling shares in its enrichment programme will limit production.
His origins had remained a mystery for the past 19 years.
Scientists find first evidence showing how primordial proteins were able to develop into life.
Kangaroos are lefties showing 'true handedness' is not unique to primates.
Solar Impulse co-founder said plane is still waiting for an opening in the wall of clouds over Pacific.
New theory shows recent development in the social structure of primates
Summer solstice takes place on 21 June 2015, making it the longest day of the year.
Cosmetics industry rejects 'outrageous advice' to avoid sun screen.
Authorities say several buildings, including two homes, have been burned to the ground.
The Mystacina miocenalis lived 16 million years ago in New Zealand.
Moon's lopsided dust cloud gets denser during meteor showers like Geminids.
Earth's largest groundwater basins are running out of water because of humans.
As Mount Sinabung erupts, thousands of people refused to leave their homes on the slopes the volcano.
'Flapjack' octopus is seven inches in diameter and has webbed arms.
Theoretical physicist says we would not notice if Earth was captured by a black hole.
Celebrity physicist said Hunt had been hounded out of his position by mobs on Twitter.
We can't even agree on a definition of what life detection is, says John Grunsfeld
The hurricane is expected to weaken in the next 48 hours, but it should remain a hurricane through Wednesday (17 June).
Leipzig, Malaga, Montenegro and Kent also make the top 10.
Earth's sulphur core gives clues to formation of the planet 4.6 billion years ago.
Tropical Storm Bill reached the Texas coast at 12pm local time.
The 1,500 year old graffiti gives an insight into the daily lives of the city's inhabitants
Scientists propose antenna that would maintain communication with hypersonic flights.
'The availability of methane and hydrogen is critical to the potential of the Martian crust as a habitat'
Watch live stream of 2015 Astrobiology Science Conference in Chicago online.
Scientists are currently looking for alien life on Mars and the moons of Jupiter and Saturn
French National Archaeological Research Institute (Inrap) finishes excavations of Lavau burial site.
Indonesia's Mount Sinabung, Karo Regency, erupted on 16 June, sending clouds of ash into the sky.
A fast-spreading Alaska wildfire has forced authorities to restrict traffic on a major highway.
Researchers have figured out how to count people in an area even without them carrying a mobile device