Johann Doppelmayr published his Atlas Coelestis in 1742: here it is again, with all its plates and notes, with an excellent explanatory text. Comets, planets, moons, stars - this is a wonder... read more
The story of PayPal, a Silicon Valley startup with a few scruffy tech-heads at the helm. It is now one of the most successful and ubiquitous companies in the world, whose alumni aren't doing... read more