科学与环境
Wild birds rewrite rules of flight efficiency: Study reveals power of 'free fuel' from the sky
来源: Phys.org - latest science and technology news stories · 发布于
An international study has overturned a longstanding textbook view of how much energy animals use to travel, revealing that flying can sometimes be cheaper than swimming.
An international study has overturned a longstanding textbook view of how much energy animals use to travel, revealing that flying can sometimes be cheaper than swimming.
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Study reveals how young adults' work lives affect their parents' mental health
Earlier this fall, researchers Sara Kalucza (Department of Sociology) and Anna Baranowska-Rataj (Center for Demographic and Aging Research, CEDAR) at Umeå University published a research article showing a connection between young people's school-to-work transitions and parental h
Phys.org - latest science and technology news stories ·
The secret to easier exercise as an adult may start in childhood
Exercise during childhood could have a surprising lifelong benefit, potentially making physical activity less exhausting in adulthood. In a study involving guinea fowl, researchers discovered that birds accustomed to carrying weights while growing up could carry those weights as
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Scientists changed how zoo lions eat. Their wild side came out
Giving zoo lions whole carcasses on a feast-and-fast schedule appears to bring out more natural behavior. The lions spent nearly three times longer feeding, engaged in more tearing and manipulating of food, and rested more heavily after meals. Their activity then increased gradua
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Lion tracks from the ice age: How two ways of seeing brought ancient animals to life
The coastline near the southern tip of Africa looked vastly different between about 400,000 years ago and 70,000 years ago, compared with today. At times it lay as much as 100km (62 miles) south of its present location, exposing the vast Palaeo-Agulhas Plain, which contained an e
Phys.org - latest science and technology news stories ·
New DNA sequencing methods detect rare mutations acquired as bodies grow and age
Somatic mutations, the DNA changes that occur as our bodies grow and age, not only hold an important key to cancer but are emerging as the seeds of a wide range of common, noncancerous diseases. The Somatic Mosaicism across Human Tissues (SMaHT) Network, a National Institutes of
Phys.org - latest science and technology news stories ·