Credit: Adapted from Nano Letters 2024, DOI: 10.1021/acs.nanolett.4c04969 Wearing sunscreen is important to protect your skin from the harmful effects of UV radiation but doesn't cool people off.

This organic blend was packed into a hexagonal mold featuring a texture mimicking elephant skin. Over two weeks in darkness, the fungi grew through the mix, binding it into a solid, porous composite.

Trying to stay cool during a heatwave in Ireland is a challenge because it's not a regular occurrence, unlike in other countries. In hotter climes, people take siestas or structure their day ...