Science

Evolvability—the capacity to generate adaptive variation—is a trait that can itself evolve through natural selection. However, the idea that mutation can become biased toward adaptive outcomes remains controversial. In this work, we report the evolution … Source link

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, … Source link

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. … Source link

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 … Source link

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

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… Source link

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

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 … Source link

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 … Source link

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 … Source link