In 1843, inventor Alexander Bain patented a way to send images over telegraph wires using synchronized pendulums. By the 1860s, a commercial fax service was already linking cities. The telephone wasn't patented until 1876, more than three decades after that first fax patent. The fax is really a child of the telegraph age.
On 8 October 1958, in Stockholm, 43-year-old Arne Larsson received the very first implanted pacemaker. The device, designed by engineer Rune Elmqvist and implanted by surgeon Åke Senning, worked for only a few hours and had to be replaced. Larsson went on to receive more than twenty pacemakers in his lifetime. He died in 2001 aged 86, outliving both the engineer and the surgeon.
Earth constantly receives about 170,000 terawatts of power from the Sun. Humanity, meanwhile, uses around 20 terawatts on average, counting all forms of energy. So in less than two hours, our planet receives as much solar energy as we use in a whole year. The challenge isn't quantity, but capturing, storing and moving that energy.