Science

Research, discovery, and the natural world.

Science · Nature News

Relapsed childhood cancers show genomic scars left by previous therapy

Nature, Published online: 29 July 2026; doi:10.1038/d41586-026-02329-3Whole-genome sequencing of hundreds of childhood tumours, enriched for pretreated, relapsed and metastatic samples, shows that cancer therapies, especially platinum-based ones, are associated with rapid acquisition of distinctive patterns of DNA damage. These mutational signatures are linked with worse outcomes and could be used to track relapses and guide treatment decisions.

Science · Nature News

Relatively few Black people benefited in the 1930s and 1940s from mortgages backed by the US government

Nature, Published online: 29 July 2026; doi:10.1038/d41586-026-02246-5Newly digitized mortgage records from 38 US states reveal the profound racial inequality of two mortgage programmes during the 1930s and 1940s. These loans, supported by the Federal Housing Administration and the Veterans Administration, were mainly responsible for the emergence of a US society that idealized home ownership. However, Black households were systematically excluded from receiving such loans. By contrast, immigrants received mortgages proportional to their number.

Science · Nature News

Amazonian earthwork survey indicates ancient population was much larger than thought

Nature, Published online: 29 July 2026; doi:10.1038/d41586-026-02321-xAerial laser-scanning data reveal that, from ad 100 to ad 300, an area spanning less than 3% of the Greater Amazonia region probably supported between 1.25 million and 3 million people and contained more than 20,000 human-made earthworks. These findings call for a re-evaluation of the density of pre-colonial Amazonian populations and the influence these civilizations had on present-day tropical soils and forests.

Science · Nature News

The first known cephalopod was only a millimetre long and lived about 520 million years ago

Nature, Published online: 29 July 2026; doi:10.1038/d41586-026-02319-5The locomotion of modern cephalopods, such as squid and cuttlefish, relies on buoyancy control achieved mainly by a specialized structure called a siphuncle. The discovery of fossils of Eoceras — a millimetre-sized cephalopod with a siphuncle — suggests that the group had already emerged in the early Cambrian, around 520 million years ago.

Science · Nature News

How fruit flies track the edge of odour plumes

Nature, Published online: 29 July 2026; doi:10.1038/d41586-026-02325-7Ants and bees are known to use spatial memories to navigate to fixed locations, such as a nest. Virtual-reality experiments in which Drosophila fruit flies follow fictive odour plumes now show that these insects use components of a similar memory-guided navigational toolkit to track the edge of a plume towards its source.

Science · Nature News

Daily briefing: Ice-age art hints at how humans flourished

Nature, Published online: 29 July 2026; doi:10.1038/d41586-026-02400-zTiny bird figurines hint at the sophistication of Europe’s earliest Homo sapiens. Plus, open peer-review reports are less likely to be retracted and a mission to fly over dangerous ‘fire clouds’.