Science/Nature

Dolphin diet study gives conservation clues

Image copyright Getty Images Image caption Wild bottlenose dolphin swimming off Florida Wild dolphins need up to 33,000 calories a day, researchers have found – equivalent to about 60 portions of salmon. In contrast, Olympic swimmers – who are smaller and less active – burn about 12,000 calories a day during training. Studying the metabolic […]

Science/Nature

Hubble scores unique close-up view of distant galaxy

Image copyright NASA/Esa/B. Salmon (StScI) Image caption Ancient galaxies usually appear as tiny red dots to powerful telescopes The Hubble telescope has bagged an unprecedented close-up view of one of the Universe’s oldest known galaxies. Astronomers were lucky when the orbiting observatory captured the image of a galaxy that existed just 500 million years after […]

Science/Nature

Crunch question

Image copyright EPA Image caption A young boy snacks on a handful of stir-fried termites in Johannesburg, South Africa Edible insects are often portrayed as something of a sustainable superfood – an environmentally friendly alternative to livestock. But who is already eating them and do they actually taste any good? Two men cloaked in tarpaulin […]

Science/Nature

Black Death 'spread by humans not rats'

Image copyright Science Photo Library Image caption The bite of rat-borne fleas infected with the bubonic plague has been blamed for disease transmission during the medieval pandemic Rats were not to blame for the spread of plague during the Black Death, according to a study. The rodents and their fleas were thought to have spread […]

Science/Nature

How flowering plants conquered the world

Image copyright Getty Images Image caption Angiosperms produce flowers and fruits, which contain their seeds. Scientists think they have the answer to a puzzle that baffled even Charles Darwin: How flowers evolved and spread to become the dominant plants on Earth. Flowering plants, or angiosperms, make up about 90% of all living plant species, including […]

Science/Nature

Hot topic

Media playback is unsupported on your device Media captionWarmer seas are turning Great Barrier Reef turtles female, a study has found A section of highway connecting Sydney and Melbourne started to melt. Bats fell dead from the trees, struck down by the heat. On the northern Great Barrier Reef, 99% of baby green sea turtles, […]