2024-08-28 04:17:04动物植物
研究发现,由于气温上升,热敏树木会向上移动

Trees in the Brazilian Atlantic Forest are migrating in search of more favorable temperatures, with species in mountain forests moving uphill to escape rising heat caused by climate change, a new study reveals.

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2024-08-28 04:06:09动物植物
研究发现,果蝇交配后的行为由雄性肽通过指令神经元控制

Scientists have succeeded in pinpointing the neurons within a female fruit fly's brain that respond to signals from the male during mating.

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2024-08-28 03:55:20动物植物
研究人员使用先进的X射线成像技术探索单个细胞

Every plant, animal, and person is a rich microcosm of tiny, specialized cells. These cells are worlds unto themselves, each with their own unique parts and processes that elude the naked eye.

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2024-08-28 03:44:33动物植物
用于计算早期海洋旅行中疾病传播速度的数学模型

Two scientists at the University of California, Los Angeles, have developed a way to calculate the approximate speed of disease spread between distant places via ocean travel hundreds of years ago.

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2024-08-28 03:33:14动物植物
研究人员阐明了东非裂谷系人类进化的生物地理背景

Ignacio A. Lazagabaster, a Ramón y Cajal researcher at the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), is part of the international team that has published a study of the biogeographic context of human evolution in the East Africa

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2024-08-28 03:21:08动物植物
里约热内卢海岸鲨鱼肌肉和肝脏中发现可卡因

A team of marine biologists and ecotoxicologists affiliated with several institutions in Brazil has found cocaine in muscle and liver samples collected from Brazilian Sharpnose sharks harvested off the coast of Rio de Janeiro. Their study, published in th

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2024-08-28 03:07:48动物植物
研究发现,在东非大草原上,一头大象可以养活200多万只蜣螂

How many dung beetles are there in East Africa? That question inspired a research project more than 20 years ago when Frank Krell was a research entomologist with the Natural History Museum London. Throughout a three-year-long project along with his wife,

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2024-08-28 02:56:02动物植物
研究确定了美国地区和政策目标下可持续航空燃料的最佳生物能源作物

Researchers analyzed the financial and environmental costs and benefits of four biofuels crops used to produce sustainable aviation fuels in the U.S. They found that each feedstock—corn stover, energy sorghum, miscanthus or switchgrass—performed best in a

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2024-08-28 02:43:55动物植物
研究表明,产卵哺乳动物内外都是独一无二的

The identification of a key gene in monotremes has increased our understanding of why the stomachs of platypuses and echidnas are atypically small, non-acidic, and, in the instance of platypuses, lack a pyloric sphincter.

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2024-08-28 02:29:31动物植物
下一代生物传感器揭示赤霉素在豆类固氮中的关键作用

Researchers at the University of Cambridge have demonstrated that the plant hormone gibberellin (GA) is essential for the formation and maturation of nitrogen-fixing root nodules in legumes and can also increase nodule size. They identified the specific t

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2024-08-28 02:17:29动物植物
自然旱地保护严重不足:研究预测人类土地利用转换将带来重大威胁

Drylands cover about 42% of the Earth's land surface and are increasingly threatened by human land-use pressures like agriculture, alternative energy sources, overgrazing and climate change. Up to a third of the global human population living in drylands

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2024-08-28 02:04:49动物植物
应力颗粒在血管形成中发挥了意想不到的作用

The behavior of the cells that make up our blood vessels is crucial to our well-being. Conditions such as inflammation, oxygen deprivation and viral infection can stress these cells and disrupt the formation of new, often pathological, blood vessels. Now

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