DNA Has Four Bases. Some Viruses Swap in a Fifth.

Cells in the placenta have an unusual trick for activating gentle immune defenses and keeping them turned on when no infection is present. It involves crafting and deploying a fake virus. Read more at QuantaMagazine.org. Music is “Unanswered Questions” by Kevin MacLeod.

The discovery that the brain has different systems for representing small and large numbers provokes new questions about memory, attention and mathematics. Read more at QuantaMagazine.org. Music is “Quasi Motion” by Kevin MacLeod.

The Reykjanes Peninsula has entered a new volcanic era. Innovative efforts to map and monitor the subterranean magma are saving lives. Read more at QuantaMagazine.org. Music is “Fire Water” by Saidbysed.

A new magnum opus posits the existence of a hidden mathematical link akin to the connection between electricity and magnetism. Read more at QuantaMagazine.org. Music is “Clover 3” by Vibe Mountain.

To better understand how neural networks learn to simulate writing, researchers trained simpler versions on synthetic children’s stories. Read more at QuantaMagazine.org. Music is “Thought Bot” by Audionautix.

Scientists have recently discovered scores of free-floating worlds that defy classification. The new observations have forced them to rethink their theories of star and planet formation. Read more at QuantaMagazine.org. Music is “Light Gazing” by Andrew Langdon.

Every species develops at its own unique tempo, leaving scientists to wonder what governs their timing. A suite of new findings suggests that cells use basic metabolic processes as clocks. Read more at QuantaMagazine.org. Music is “Pulse” by Geographer.

The telescope conjecture gave mathematicians a handle on ways to map one sphere to another. Now that it has been disproved, the universe of shapes has exploded. Read more at QuantaMagazine.org. Music is “Slow Burn” by Kevin MacLeod.

By watching “minimal” cells regain the fitness they lost, researchers are testing whether a genome can be too simple to evolve. Read more at QuantaMagazine.org. Music is “Hidden Agenda” by Kevin MacLeod.

Genetic elements called Mavericks that have some viral features could be responsible for the large-scale smuggling of DNA between species. Read more at QuantaMagazine.org. Music is “Clover” by Vibe Mountain.