trunks

At a sauna in Peckham, south London, young professionals sit on scorching hot, wood-panelled benches, dressed in swimming trunks and bathing suits.

With fewer new trees, the report found that the trunks and branches of dead trees - known as woody biomass - became carbon emitters, rather than carbon absorbers, about 25 years ago.

Trees store carbon dioxide in their trunks and branches as they grow but release the gas into the atmosphere when they die.

They laid sprinkler lines and wrapped the trunks of some of the hulking trees with a fire-resistant material akin to tin foil.

To imitate human heat and thus deceive Ukrainian thermal imaging cameras, their trunks are wrapped with heating wire underneath the jacket.