Head start: fossil clues about how bodies evolved from two-fold to five-fold symmetry
Nature, Published online: 09 September 2025; doi:10.1038/d41586-025-02818-x How the five-fold symmetrical bodies of starfish and other echinoderms evolved is a
Different flames
“Fire day! Fire day!” Roger chanted, the other kids joining in. Elo shrank in her seat. She’d already dreaded today’s
Newfound immune cell in mice hints at why inflammation spikes with old age
Macrophages, which hoover up pathogens, have been implicated in the chronic inflammation that sets in with the march of time.Credit:
working with farmers to protect a reintroduced species
“Since 2012, I’ve worked with the Tonkawa Foundation, in Nuevo Casas Grandes, Mexico, on the recovery of the Mexican wolf
Hundreds of suspicious journals flagged by AI screening tool
An AI tool can screen thousands of journals, and identify ones that violate quality standards.Credit: PaulPaladin/Alamy Researchers have identified more
Repeated heatwaves can age you as much as smoking or drinking
Credit: Patricia de Melo Moreira/AFP via Getty Long-term exposure to extreme heat events accelerates the body’s ageing process and increases
Net zero needs AI — five actions to realize its promise
In 2024, the global average annual temperature exceeded 1.5 °C above pre-industrial levels for the first time. Greenhouse-gas emissions are rising,
Flat-panel laser displays through large-scale photonic integrated circuits
Chellappan, K. V., Erden, E. & Urey, H. Laser-based displays: a review. Appl. Opt. 49, F79–F98 (2010). PubMed Google Scholar
Watch a human embryo implant itself — with brute force
A microscopic view of a nine-day-old human embryo shows a protein found in embryonic stem cells in green, developing tissue
Brazilian PhD students opt out of US research opportunities
A quiet shift has taken place among Brazilian graduate-student researchers over the past year: many are giving up or postponing