Are murder hornets from Asia invading North America? An entomologist who lived among them in Japan explains what's true about the predatory insects.

"The concept is broadly similar to an artificial leaf," researchers said.

There's no sound in space. But - working with NASA - musicians and scientists turned a Hubble Space Telescope image of a galaxy cluster into music.

Italy’s northern border with Switzerland depends on the natural, morphological boundaries of glaciers’ frontiers. But in recent years, glaciers have been melting at increased rates due to climate change. This has caused the border to shift noticeably.

Infectious diseases that leap from animals to humans are called zoonotic diseases. Covid-19 is an example of a zoonotic disease caused by a coronavirus.

Every time the virus copies itself it makes mistakes, creating a trail that researchers can use to build a family tree with information about where it's traveled, and when.

Aerosols are the tiny particles of liquids and material that float around in our environment. When they come from an infected person, they may be a significant source of coronavirus transmission. The science of infectious aerosols.

It's nature with a much-decreased human influence. We've been hearing stories like this from all around the globe. People in India’s northern state of Punjab have reported seeing the Himalayas for the first time in decades. These satellite images over northern India show strikingly how aerosol levels have dropped since the Covid-19 lockdown began.

From Earth Day Network India … Dharti Ma literally translates to Mother Earth. This music video is a tribute to our planet, created In an amalgamation of styles by some of the finest musicians of India - and in 8 languages - to commemorate Earth Day’s 50th anniversary.

The Hubble Space Telescope was launched on April 24, 1990. It's spent the past 3 decades acquiring magnificent images of distant space objects, providing a time machine that's taken astronomers back to when the universe was less than a billion years old.