SCIENCE

More than 200 people suffered injuries in the disaster, which also decimated at least 400 structures.

Water supplies in rural areas are widely contaminated with arsenic, affecting some 20 million people.

The effects of the 1986 nuclear accident are more than ever today's concern.

Space agency tweets picture of purple nebula in honour of Prince, who died at his home aged 57.

Nations will meet in New York today to sign the Paris Agreement set out at COP21 last year.

Earth Day is celebrated annually in efforts to spread awareness about and support environmental protection.

Iranian photojournalist Asghar Khamseh won the L'Iris d'Or Photographer of the Year for his powerful portraits of acid attack victims.

Aerojet's ion engine uses xenon propellant and could be a powerful way to explore deep space.

Earth Day 2016 marked by pledge to plant 7.8 billion trees – one for each person on the planet.

Fossil of infant Rapetosaurus krausei shows giant dinosaurs were born with adult proportions.

The 'sweaty' advertising panel is designed to fool the Aedes Aegypti mosquito.

The Earth Day Network has an ambitious dream: to plant 7.8 billion trees by 2020.

British physicist Dr Mike McCulloch of Plymouth University has presented results on a new theory.

Nasa and the ESA combined images of Bubble Nebula to create first whole image of the nebula.

Scientists examine the options for female astronauts and the issue of menstruation in space.

The mummy was found buried in the ancient fishing village of Aspero.

In modern humans, laughter may be a testimony of a relationship's quality.

A bizarre hoax leading people to believe the moon will appear green is trending online.

How the 1986 nuclear accident still haunts the plant's workers, residents and clear up staff.

A mini pink moon can be observed in April 2016. What is the meaning behind the farthest full moon of the year's name?

President Rafael Correa said rebuilding costs could reach $3bn.

Monkeys found a way to migrate into North America from South America before the Isthmus of Panama existed.

The Lyrid meteor shower returns this week, peaking on Friday 22 April.

Peake said he is hoping to run the marathon in 3.5 to 4 hours.

Companies could use a natural alternative to plastic, but without laws to enforce it our oceans are suffering.

DNA 'GPS' allows scientists to pinpoint the origin of Yiddish to Iranian and Ashkenazic Jews.

Aerial photos of earthquake-hit towns in Ecuador show the extent of the damage as country buries its dead.

Psychologists probe the 'overview effect' of seeing our planet from afar.

Only 7% of 2,300km-long reef system left untouched by bleaching, survey says.