Humans are happiest around plants, but the cities where most people live are devoid of nature. Walls provide the perfect canvas for more urban greenery.
Human space exploration has languished in recent years while robots lead the charge into the final frontier. Will humans ever venture beyond our pale blue dot?
Throughout the space age, astronauts have communicated their unique experiences in a variety of ways. Now, in the digital age, robotic explorers are stealing the show and our hearts.
Our interpretation of the universe and our place in it has slowly evolved over time. From hollow wheels of mist to fiery gas bodies, we’ve come a long way in 2,600 years.