feed info

34,043 articles from Guardian Unlimited Science

Giraffe grandmothers are high-value family members, say scientists

As with elephants and orcas, worldly wisdom and childcare brings group-survival perks, research suggestsPillars of family life, the community and often the workplace, grandmothers are a crucial component of human society – now researchers say they may also play an important role among giraffes.Experts conducting a review of giraffe social behaviour say female giraffes live for about eight years...

Tusk master: Wally the walrus departs Isles of Scilly and heads north

Marine experts hope the creature is on his way back to the Norwegian archipelago of SvalbardAfter spending the summer wowing British holidaymakers – and sometimes making a nuisance of himself by accidentally sinking boats – Wally the walrus appears to be trying to head home.The British Divers Marine Life Rescue (BDMLR) said on Tuesday that Wally had departed the Isles of Scilly, where he had...

Coronavirus live news: US reaches 70% first-shot goal while Japan shifts to home care for most Covid patients

White House greets vaccine news as ‘Milestone Monday’ while Japan moves to ensure it has enough hospital beds amid a spike in Covid casesUS reaches Biden’s 70% first-shot goal as threat to unvaccinated people growsHundreds of health workers in isolation as Delta hits Australian state of QueenslandJohnson dumps ‘amber watchlist’ plan as it emerges top adviser has quit 6.29am BST More on...

Hopes UK trial will allay pregnant women’s Covid vaccine concerns

Researchers aim to determine optimal gap between doses as well as explore potential side-effects in more detailCoronavirus – latest updatesSee all our coronavirus coverageThe optimal vaccination schedule to protect pregnant women against Covid-19 is to be explored in a UK clinical trial researchers hope will also allay concerns about getting the jab.Last week, Prof Jacqueline Dunkley-Bent, chief...

Why don’t we see more meteorites after big asteroid belt collisions?

Amount of cosmic debris reaching Earth has stayed surprisingly constant in last 500m years, say scientistsThis month it is worth turning your eyes to the night sky to watch the spectacular Perseid meteor shower. Peak viewing time will be around 12 August, when as many as 150 meteors an hour will whizz overhead. Generated by Earth passing through the debris left behind by Comet Swift-Tuttle, these...