This mechanical device for utilising the sun's radiant heat is the result of experiments conducted during a series of twenty years; a succession of experimental machines of similar general design ...

By 2050, over 5 billion people — probably more than half the planet’s population — will be exposed to at least a month of health-threatening extreme heat when outdoors in the sun ...

That means it is getting even better at reflecting away the Sun’s heat. Although scientists can study the solar wind and corona from afar using more-distant spacecraft and solar telescopes on ...