Fascinating findings of 2025

Silicone recyclingLook almost anywhere in your home and you’ll likely find something made of silicone. Unfortunately, manufacturing silicone-based materials comes with a high environmental cost that is largely due to the energy-intensive processes needed to turn silicon-rich quartz into polymerizable chlorosilanes. But researchers have moved a step closer to recycling the material. Scientists designed a relatively low-temperature reaction that can break nearly any silicone—even complex, cross-linked structures used in baking equipment—into base chlorosilanes that can be recycled to build new silicone materials (Science 2025, DOI: 10.1126/science.adv0919). The key players: a gallium catalyst that improves efficiency, and boron trichloride, which provides an abundant source of chlorine atoms.Stopping locust swarmsThere’s a reason locust swarms are seen as mythical plagues: the insects can consume Manhattan-sized swaths of farmland in just days. Fighting the bugs with pesticides requires copious quantities of chemicals that pose a threat to humans and the environment. So scientists have turned to understanding the chemistry that causes swarms in the first place. By mapping the biosynthetic pathway of 4-vinylanisole—a pheromone that triggers locusts’ swarming behavior—researchers identified 4-nitrophenol as a chemical inhibitor for the pathway (Nature 2025, DOI: 10.1038/s41586-025-09110-y). Early results from small-scale field tests that use the chemical to prevent locust swarms are promising, but 4-nitrophenol can be toxic, and safety testing will be vital before scaling up. What makes palladium so great?Synthetic chemists have long known that palladium beats nickel when it comes to catalyzing carbon-hydrogen activation, a key step in the process of severing C–H bonds. Exactly how much better