A Timeless Mystery You’re sitting outside with friends one summer’s evening. The mosquitoes seemcompletely uninterested in your neighbours, while utterly obsessed with you. Someleave untouched, while others spend the whole evening swatting, and the whole nightscratching. It feels unfair. But it isn’t random. Mosquitoes use a sophisticated combination of smell, heat and chemical signals tolocate…

You arrive in a mountain town expecting crisp air, spectacular views and epicadventures. Instead, you develop a headache. Walking upstairs leaves you breathless. Sleep becomes restless and fragmented. Yourappetite disappears. One beer feels like three. Normal activities suddenly feelexhausting. The reason lies in how the body responds to an environment it was never fully designedto…