2025-02-25 23:03:41动物植物
鲸鱼粪便中的铁可能有助于为过去的海洋施肥

The blue whale is the largest animal on the planet. It consumes enormous quantities of tiny, shrimp-like animals known as krill to support a body of up to 100 feet (30 meters) long. Blue whales and other baleen whales, which filter seawater through their

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2025-02-25 22:52:54动物植物
跳跃的宝库:科学家发现16种新的蚱蜢

A Mississippi State University scientist has discovered a hopping treasure trove—16 new species of grasshoppers living in the thorny scrubs of U.S. and Mexican deserts.

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2025-02-25 22:40:06动物植物
世界上最稀有的有袋动物在濒临灭绝后显示出复苏的迹象

A new review has documented the remarkable journey of Australia's most critically endangered marsupial, the Gilbert's potoroo, from its rediscovery to ongoing recovery efforts.

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2025-02-25 22:26:55动物植物
美国玉米品种的寻水能力存在很大差异

A corn plant knows how to find water in soil with the very tips of its roots, but some varieties, including many used for breeding high-yielding corn in the U.S., appear to have lost a portion of that ability, according to a Stanford-led study. With clima

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2025-02-25 22:13:31动物植物
新的农林业地图绘制了树木的环境、社会和经济效益

There's a longstanding attitude in many farming communities that trees and agriculture don't mix. But agroforestry—the intentional integration of trees and shrubs in agricultural systems, such as planting trees as windbreaks, integrating trees on pastur

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2025-02-25 22:00:30动物植物
蛋白质尾部的长短:它们如何帮助膜插入并可能影响遗传疾病

The fatty membrane surrounding every living cell is a vibrant environment where countless biological processes take place. This membrane protects the cell from its surroundings and divides it into internal compartments; it is responsible for metabolism, e

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2025-02-25 21:46:52动物植物
抑制但准备好了:二价性如何使发育基因处于稳定的表达状态

As well as being essential in the precise packaging of DNA into the space of the nucleus, histone proteins are also the site of modifications, chemical additions referred to as epigenetic marks, that control whether a gene is silenced or expressed.

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2025-02-25 21:32:35动物植物
科学家为可编程合成蛋白重新编码基因组

Synthetic biologists from Yale were able to re-write the genetic code of an organism—a novel genomically recoded organism (GRO) with one stop codon—using a cellular platform that they developed enabling the production of new classes of synthetic proteins.

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2025-02-25 21:18:05动物植物
诺氏疟原虫基本基因图谱有助于治疗设计

A new, comprehensive map of all the genes essential for blood infections in Plasmodium knowlesi (P. knowlesi), a parasite that causes malaria in humans, has been generated by researchers at Harvard T.H. Chan School of Public Health and colleagues. The map

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2025-02-25 21:03:09动物植物
座头鲸的歌声在结构上与人类语言相似

Language has long been considered a uniquely human trait, with features that mark it out as distinct from the communication of all other species. However, research published in Science has uncovered the same statistical structure that is a hallmark of hum

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2025-02-25 20:49:07动物植物
螳螂虾棒过滤声音以减轻损害

Known for their powerful punch, mantis shrimp can smash a shell with the force of a .22 caliber bullet. Yet, amazingly, these tough critters remain intact despite the intense shockwaves created by their own strikes.

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2025-02-25 20:38:35动物植物
恢复捕食者,恢复生态系统:黄石狼和其他食肉动物推动了强烈的营养级联

A new study reveals the profound ecological effects of wolves and other large carnivores in Yellowstone National Park, showcasing the cascading effects predators can have on ecosystems. In Yellowstone, this involves wolves and other large carnivores, elk,

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