100610091 gettyimages 532125424 - Scientists explain the sound of knuckle cracking
Science/Nature

Scientists explain the sound of knuckle cracking

Image copyright Getty Images Scientists have turned their attention to investigating that most annoying of human habits – the sound made when you crack your knuckles. The characteristic pop can be explained by three mathematical equations, they say. This confirms the idea that the cracking sound is due to tiny bubbles collapsing in the fluid […]

100588290 227bf2e7 6001 4cf5 b48b 23f19b37eb61 - Ghostly galaxy may be missing dark matter
Science/Nature

Ghostly galaxy may be missing dark matter

Image copyright NASA/ESA/P. van Dokkum Image caption Hubble image: The galaxy is so faint that other spiral galaxies can been seen through it An unusually transparent galaxy about the size of the Milky Way is prompting new questions for astrophysicists. The object, with the catchy moniker of NGC1052-DF2, appears to contain no dark matter. If […]

p062kfl5 - Tech trials to find Antarctica's 'missing' iron meteorites
Science/Nature

Tech trials to find Antarctica's 'missing' iron meteorites

Media playback is unsupported on your device Media captionGeoff Evatt: The aim is to develop a robust system that will work in the Antarctic The project to find Antarctica’s “missing meteorites” is making excellent progress, say scientists. A group led from Manchester University is developing detection equipment it believes will discover a bounty of iron […]

100592370 gettyimages 904231604 - Shoppers to pay deposit for bottles and cans in bid to cut waste
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Shoppers to pay deposit for bottles and cans in bid to cut waste

Image copyright Getty Images Image caption Shoppers will be charged a refundable extra fee when buying single-use drinks People in England will soon have to pay a deposit when they buy drinks bottles and cans in a bid to boost recycling and cut waste. The deposit will increase prices – but consumers will get the […]

100589094 1 - JWST: Hubble 'successor' faces new delay
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JWST: Hubble 'successor' faces new delay

Image copyright NASA/Chris Gunn Image caption The telescope part of JWST recently came through its last big space simulation The successor to the Hubble Space Telescope has been delayed yet again and will not now be launched before May 2020. The James Webb Space Telescope will also bust the cost cap that was placed on […]

100543727 picture1 femalewithcub 1024x668 - Bear cubs spending longer with mothers
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Bear cubs spending longer with mothers

Image copyright Ilpo Kojola Image caption A female Scandinavian brown bear with her cub Brown bear cubs living in the forests of Sweden are spending longer with their mothers. Baby bears stay by their mother’s side until they are aged two-and-a-half – an extra year compared with a few decades ago, according to a study. […]

100522709 hawking - Stephen Hawking's final interview: A beautiful Universe
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Stephen Hawking's final interview: A beautiful Universe

Image copyright Pallab Ghosh Last October I invited Prof Stephen Hawking to comment on the detection of gravitational waves from the collision of two neutron stars. It turned out to be his final broadcast interview. The collision was a really big story for many reasons, not least because within minutes of the detection the world’s […]

99555107 x1a - European Space Agency teams with ICEYE Finnish start-up
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European Space Agency teams with ICEYE Finnish start-up

Image copyright ICEYE Image caption Artwork: The ICEYE satellites aim to see features on the ground as small as 3m across The European Space Agency is to work with Finnish start-up ICEYE on ways to exploit its novel radar satellites. ICEYE-X1 was launched in January – the first of multiple spacecraft that will go up […]

100547519 2 - Mount Etna is 'sliding towards the sea'
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Mount Etna is 'sliding towards the sea'

Image copyright Getty Images Image caption Etna is a big draw for scientists and tourists because of its constant fiery rumblings Europe’s most active volcano, Mount Etna, is sliding towards the sea. Scientists have established that the whole edifice on the Italian island of Sicily is edging in the direction of the Mediterranean at a […]

88240971 img 2966 - How effective are earthquake early warning systems?
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How effective are earthquake early warning systems?

Image caption MyShake: An app which allows users’ phones to act as seismometers Earthquake early warning detection is more effective for minor quakes than major ones. This is according to a new study from the United States Geological Survey. Seismologists modelled ground shaking along California’s San Andreas Fault, where an earthquake of magnitude 6.5 or […]