A new mathematical model uses Einstein theory of general relativity to describe a viable time machine.
It is a large anomaly in the biggest kind of gravity-bound structure there is in the universe.
There are concerns the pact will make it difficult to repeal US climate regulations as Trump promised.
The female orangutan inherited the disorder, meaning there could be more living in the forests.
Injecting wastewater into the ground was the likely cause, not fracking.
The discovery shows that advanced aerodynamic feathers evolved much earlier than thought.
Calls to cull sharks have increased since a teenager was killed in an attack in April.
Copper was an important material in ancient Egypt but little was known about its origins.
Scientists have revealed the news we all wanted to hear.
No tsunami warming has been issued as of yet.
Four grey whales have been killed in the last eight days.
Missouri, Arkansas and Texas were worst hit by the storms.
'We owe the people of world an America that is not for sale to the fossil fuel industry.' -Senator Whitehouse
Cassini's next dive between Saturn and its innermost rings is scheduled for 2 May.
The colour of the water can be attributed to oxidised iron in brine, say researchers.
From new oil pipelines to threats to Paris climate agreement, green campaigners in Congress have hard fight ahead.
Tremor initially measured at 7.2-magnitude strikes off coast of southern island of Mindanao.
Analysis of ancient bones paints a picture of healthy, sturdy horses.
The extreme tactic to escape a bad match has never been seen before in dragonflies.
The beads were discovered in a burial mound in Illinois in 1945 but until now where they came from had been a mystery.
History shows that building big walls can have devastating consequences for wildlife.
Were there Homo sapiens in the Americas 115,000 years earlier than we thought?
The finds include 50,000-year-old genetic material from Neanderthal urine in Belgium.
Horizontal movements of the seafloor are involved in creating massive tsunamis, a finding which challenges years of science.
Bricks made from Mars-like soil are stronger than reinforced concrete.
New spacesuits will not be ready before the International Space Station's closure in 2024.
Tokyo is concerned corals in Japanese waters could be extinct by 2070 given current rate of coral bleaching.
Individuals adopting elephant must pay 10m rupees but temples get them for free.
Taiwanese man survives but girlfriend dies three days before rescuers arrive.
Scientists are trying to learn more about the Sun's activity to prepare for the impact of its eruptions on Earth.