2025-05-23 21:03:29动物植物
古代DNA用于绘制发热细菌的进化图

Researchers at the Francis Crick Institute and UCL have analyzed ancient DNA from Borrelia recurrentis, a type of bacteria that causes relapsing fever, pinpointing when it evolved to spread through lice rather than ticks, and how it gained and lost genes

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2025-05-23 20:49:11动物植物
藻类之间的竞争如何改变缅因湾

As the ocean warms across its temperate regions, kelp forests are collapsing and turf algae species are taking over. This shift from dense canopies of tall kelp to low-lying mats of turf algae is driving biodiversity loss and altering the flow of energy a

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2025-05-23 20:37:35动物植物
一种像自然界中发现的东西一样运动的人造蛋白质

Proteins catalyze life by changing shape when they interact with other molecules. The result is a muscle twitching, the perception of light, or a bit of energy extracted from food. But this crucial ability has eluded the growing field of AI-augmented prot

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2025-05-23 20:24:36动物植物
科学家们已经弄清楚了已经灭绝的巨型地懒是如何变得如此之大的,以及这一切出了什么问题

Most of us are familiar with sloths, the bear-like animals that hang from trees, live life in the slow lane, take a month to digest a meal and poop just once a week. Their closest living relatives are anteaters and armadillos, and if that seems like an od

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2025-05-23 20:09:52动物植物
被称为内含子的“自私”基因被证明是遗传复杂性的主要来源

DNA is the genetic code that provides the biological instructions for every living species, but not every bit of DNA helps the species survive. Some pieces of DNA are more like parasites, along for the ride and their own survival.

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2025-05-23 19:55:35动物植物
从混乱到清晰:新工具在复杂的细胞数据中发现联系

Imagine looking at thousands of scattered puzzle pieces and trying to guess what picture they create. Without any reference point, it's nearly impossible.

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2025-05-23 19:43:05动物植物
死亡的气息?蠕虫在接触死亡的同类时,会经历生育能力和寿命的改变

The mere presence of a dead counterpart elicits strong responses across species. For example, many insects such as bees and ants will instinctively remove dead members from the hive, seemingly to keep the nest clear of any potential pathogens. Research fr

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2025-05-23 19:29:31动物植物
尽管基因不守规矩,花朵却以惊人的精确度绽放

Flowers grow stems, leaves and petals in a perfect pattern again and again. A new Cornell study shows that even in this precise, patterned formation in plants, gene activity inside individual cells is far more chaotic than it appears from the outside.

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2025-05-23 19:18:21动物植物
气动软机器人模拟果蝇幼虫的自转动作

Soft-bodied robots are unlocking a new era of adaptive machines that can safely interact with the human body, squeeze through tight spaces, and propel themselves autonomously.

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2025-05-23 19:07:05动物植物
研究揭示了Vi非法食用熊胆背后的影响ệt Nam

A new study led by San Diego Zoo Wildlife Alliance researchers sheds light on the social dynamics that drive the continued consumption of bear bile in Việt Nam, revealing that gift-giving among close social networks plays a crucial role in sustaining dema

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2025-05-23 18:55:23动物植物
研究发现,澳大利亚最危险物种的剩余栖息地有一半没有受到保护

Australia needs to urgently prioritize state and national conservation policies, according to a new study, with the findings warning that more than 220 critically endangered species are at risk of being lost due to their small distributions coupled with u

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2025-05-23 18:40:43动物植物
“非常奇怪”的弹性龙之谜终于解开:北美最著名的化石之一被确定为新物种

A group of fossils of elasmosaurs—some of the most famous in North America—have just been formally identified as belonging to a "very odd" new genus of the sea monster, unlike any previously known.

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