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Humans often take actions to assist others experiencing unresponsiveness, such as transient loss of consciousness. How other animals react to unresponsive conspecifics—and the neural mechanisms driving such behaviors—remain largely unexplored. In this ...

Whereas humans exhibit emergency responses to assist unconscious individuals, how nonhuman animals react to unresponsive conspecifics is less well understood. We report that mice exhibit stereotypic behaviors toward unconscious or dead social partners, ...

Clinical diagnosis typically incorporates physical examination, patient history, various laboratory tests, and imaging studies but makes limited use of the human immune system’s own record of antigen exposures encoded by receptors on B cells and T cells. ...

Stamp-size devices running machine learning models are tackling agricultural, health, and conservation problems in resource-poor regions

The latest in science and policy

Thousands of U.K. “design registrations” sold to Indian academics in past 2 years, new research finds

Limited color channels in fluorescence microscopy have long constrained spatial analysis in biological specimens. We introduce cycle hybridization chain reaction (cycleHCR), a method that integrates multicycle DNA barcoding with HCR to overcome this ...

Quantum computing is maturing at a rapid pace, and it is quite plausible that quantum computers capable of solving problems of value to businesses will be available this decade. At the same time, quantum computing likely will not supplant classical ...

Keyhole instability during laser welding and laser powder bed fusion (LPBF) can cause keyhole collapse and pore formation. Using high-speed x-ray imaging, we demonstrate that the flow vortex–induced protrusion on the rear keyhole wall is crucial in ...

Thermoelectric coolers (TECs) are pivotal in modern heat management but face limitations in efficiency and manufacturing scalability. We address these challenges by using an extrusion-based 3D printing technique to fabricate high-performance ...

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Highlights from the Science family of journals

The 2025 United Nations Climate Change Conference (COP30) will convene in November in Belém, Brazil. The location, often referred to as the gateway to the Amazon (1, 2), represents a historic opportunity to position the Amazon as central in global climate negotiations. Hosting the conference in a region that faces critical challenges such as deforestation (3), illegal mining (4), and extreme climatic events (5, 6) underscores the importance of the discussions. However, the Brazilian government’s proposed use of luxury cruise ships for conference accommodations (2) is at odds with the meeting’s goals.

HomeScienceVol. 387, No. 6736Military base threatens Galápagos IslandsBack To Vol. 387, No. 6736 Full accessLetter Share on Military base threatens Galápagos IslandsMaría José Navarrete Méndez [email protected], Gabriela Mena González, and Leticia M. Ochoa OchoaAuthors Info & AffiliationsScience20 Feb 2025Vol 387, Issue 6736p. 834 PREVIOUS ARTICLEAirport plan imperils South Korea’s tidal flatPrev…

Sura, a tidal flat in the Mangyeong estuary in South Korea, has survived one of the world’s largest coastal reclamation projects. Now, a proposed airport threatens this critical refuge (1). The airport’s construction, planned to take place between 2025 and 2029, would lead to an irreversible loss of the biodiversity and sociocultural activities that Sura supports (1, 2).

Two authors probe the metrics by which we determine who, and what, matters

A new exhibition probes the health consequences of work

Long-term plans and comprehensive vision are needed

In mice, two brain regions drive the impulse to revive an unconscious companion

Semiconductor particles are fused to make a thermoelectric cooler