Forest Breakup Raises Temperatures, Black‑Hole Jets Light Gas, Butterflies Fool Predators

Fragmenting continuous forests into isolated patches raises surface temperatures in tropical and temperate zones, a satellite‑based study finds. In high‑altitude boreal forests the same breakup had a cooling effect because exposed ground was covered by reflective snow. The results suggest climate mitigation plans should monitor forest fragmentation as well as total forest loss. An Indian research team analysing hundreds of observations discovered ionised hydrogen glowing only along the paths of radio‑frequency jets from massive black holes, while magnesium, a marker of cool gas, was scattered around the galaxies. This pattern indicates the jets do not create the gas halos but crash into existing clouds and illuminate them. High‑speed video and 3D modelling showed that flapping wings combined with contrasting stripes and bright edges on butterfly wings create an optical illusion that confuses predators about the insect’s speed and direction, a defence the scientists call one of the most successful among moving animals.

Context

Forest fragmentation often follows logging and agricultural expansion, altering local climate. Black‑hole jets are known to inject energy into host galaxies, influencing surrounding gas. Many prey species rely on visual tricks to avoid being caught.