SCIENCE

AI system learns from past poaching events to map out effective patrol routes.

Sumatran rhinos are among the world's most endangered species, but there may be options to their boost numbers.

An unpublished report shows Pacific bluefin tunas face a severe threat of extinction.

Matt Damon inspires Chinese space programme to new heights.

How does a weightless man run on the spot while hurtling through space at 17,150mph?

Soviet authorities drafted hundreds of thousands of workers to assist with clean-up operations at the plant and in the surrounding areas

Sun-powered plane will take approximately 66 hours to make its journey to Mountain View, California.

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.