The Arctic has lost more than half its volume of sea ice over the past three decades and three—quarters of the sea area that was once frozen is now open water. The rate of ice decline indicates the Arctic Sea could be free of ice by 2040. For the first time this year a Russian tanker made it through the Arctic ice fields without the aid of an icebreaker escort. The Russian government expects cargo along the northern sea route between Siberia and the Pacific to grow tenfold by 2020. The Arctic region has in recent years experienced periods with temperatures 15–20°C above average.
PHOTO Lars Just
Lack of space in cities restricts opportunities for outdoor exercise, resulting in city-dwellers wasting energy on journeying to the outskirts in search of open areas. The energy saving solution to the problem is close by, however.
Splitting the bill between water utilities and the city budget made financing Copenhagen’s cloudburst plan possible.
Farming in the desert might seem a bit optimistic. An Australian greenhouse uses concentrated solar power to produce energy and become independent of fresh water supplies. The result is 17,000 tons of tomatoes a year.