Science/Nature

Kilogram gets a new definition

Image copyright SPLImage caption There are now discrepancies between copies of the kilogram and the master version held in a French vault Scientists have changed the way the kilogram is defined. Currently, it is defined by the weight of a platinum-based ingot called “Le Grand K” which is locked away in a safe in Paris. […]

Science/Nature

Climate change: Worries over CO2 emissions from intensifying wildfires

Image copyright Getty Images Rising numbers of extreme wildfires could result in a significant increase in CO₂ emissions, scientists warn. That could mean attaining the Paris climate agreement’s goal of keeping global temperature rise well below 2C could become harder, they say. Present emission-cut pledges by countries are projected to increase the average global temperature […]

Science/Nature

Greenland ice sheet hides huge ‘impact crater’

Image copyright NATURAL HISTORY MUSEUM OF DENMARKImage caption Space view: The semi-circular margin of the ice sheet traces the outline of the crater What looks to be a large impact crater has been identified beneath the Greenland ice sheet. The 31km-wide depression came to light when scientists examined radar images of the island’s bedrock. Investigations […]

Science/Nature

Exoplanet discovered around neighbouring star

Image copyright ESO/M. KornmesserImage caption Artwork: Barnard’s Star b is thought to be quite cold Astronomers have discovered a planet around one of the closest stars to our Sun. Nearby planets like this are likely to be prime targets in the search for signatures of life, using the next generation of telescopes. The planet’s mass […]

Science/Nature

‘Conservation successes’ bring hope for mountain gorilla

Image copyright Getty ImagesImage caption Mountain gorilla: From critically endangered to endangered Conservation efforts appear to be paying off for some of the world’s most charismatic animals, according to new assessments for the extinction Red List. Prospects look better for the mountain gorilla, after years of conservation measures, including anti-poaching and veterinary patrols. And numbers […]