Science/Nature

'Dispersal machines'

[ad_1] Image copyright Getty Images Image caption Cane toads were introduced to Queensland from Puerto Rico They are toxic invaders that have conquered swathes of northern Australia as they continue their seemingly irrepressible march west towards the Indian Ocean. Packed with poison and supremely adaptable, the dreaded cane toad, or Bufo marinus, has few friends […]

Science/Nature

Fossil named after Sir David Attenborough

[ad_1] Image copyright Siveter et al Image caption Cascolus ravitis has been reconstructed as a virtual fossil, revealing every detail of the animal A 430-million-year-old fossil discovered “frozen in time” in ancient volcanic rock has been named after Sir David Attenborough. The tiny crustacean, measuring less than 1cm long, was found by researchers in Herefordshire. […]

Science/Nature

Sea otters ahead of dolphins in using tools

[ad_1] Image copyright Jessica Fujii Image caption Sea otters use rocks to crack open shellfish Sea otters may have been using stone tools for thousands or even millions of years, according to scientists. It appears otters learned how to use tools long before other marine mammals. Sea otters are often seen floating on their backs, […]

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Nasa 'smallsats' open up new planetary frontier

[ad_1] Image copyright NASA Image caption The IceCube smallsat was designed to study Earth, but upcoming missions would be despatched to other planetary bodies Nasa is planning a series of small satellite missions that could open up new ways of exploring the Solar System. James Green, head of planetary science at Nasa, told BBC News […]

Science/Nature

Rosetta saw cliffs collapse on comet

[ad_1] Image copyright ESA/Rosetta/NAVCAM Image caption A wide range of changes were observed on Comet 67P The comet visited by the Rosetta spacecraft is constantly being re-shaped, sometimes in dramatic fashion. It witnessed the collapse of entire cliffs at two locations on Comet 67P, events that were probably driven by exposure to sunlight. The European […]

Science/Nature

Crustal attraction

[ad_1] Media captionSensing the magnetism of rocks from orbit is very challenging It is the best depiction yet of the magnetism retained in Earth’s rocks, as viewed from space. The map was constructed using data from Europe‚Äôs current Swarm mission, combined with legacy information from a forerunner satellite called Champ. Variations as small as 250km […]