科学与环境
Cows deliver healthy calves without embryonic protein long thought essential for pregnancy
来源: Phys.org - latest science and technology news stories · 发布于
For decades, scientists have believed that a protein called interferon tau (IFNT) is indispensable for pregnancy in cattle. Produced by the early embryo, it was thought to signal its presence to the mother and prevent the hormonal changes that would otherwise end the pregnancy.
For decades, scientists have believed that a protein called interferon tau (IFNT) is indispensable for pregnancy in cattle. Produced by the early embryo, it was thought to signal its presence to the mother and prevent the hormonal changes that would otherwise end the pregnancy.
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Only 9% of major companies use biodiversity indicators, study finds
Biodiversity indicators can help companies make more sustainable decisions. But only 9% of the world's largest companies in sectors with a major impact on biodiversity use such indicators, according to a new study from Lund University. The researchers also show that different ind
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The genetic switch behind the butterfly's enhanced visual world of color
Many insects see the world through hundreds of tiny lenses that are grouped together in a visual organ known as the compound eye. Behind each lens sits a cluster of eight light-detecting cells arranged in a pattern that scientists believe has existed for hundreds of millions of y
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Stratospheric winds can warn of extreme energy demand in Europe
A breakdown of normal polar winds in winter raises the chance of extreme cold—and a resulting spike in energy demand—in Europe, new research shows. Normally, strong and stable westerly winds circle high above the Arctic in the winter, in what is known as the "stratospheric polar
Phys.org - latest science and technology news stories ·
Chance Instagram sighting leads to discovery of rare giant water lily in Colombia
A new paper published in the journal Phytotaxa describes a new species in the genus Victoria, the Colombian giant water lily (Victoria colombiana). With only three other known species in the genus, V. colombiana joins the pantheon of nature's giants with pads measuring up to 2 me
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Bees struggle to smell flowers when air pollutants combine
Bees, moths and other pollinating insects have a harder time smelling flowers in polluted air, according to research led by the University of Reading. Scientists analyzed 22 experimental studies on how the air pollutants ozone and nitrogen oxides (NOx) affect pollinators. Both po
Phys.org - latest science and technology news stories ·