Humans are naturally risk-averse. We try to avoid disaster zones, and don’t like to fly when there appear to be mechanical problems or heavy fog.
For most of the year, Greenland is white, but things are starting to change. Currently, Greenland is losing 350 gigatonnes of ice annually – 50% from ice melt, and 50% from glaciers moving into the ocean and breaking up into icebergs, which then melt.
One of the greatest achievements of modern times – the overall global advance of public health – is struggling. Around the world, healthcare systems are under strain as populations swell and grow older, helped by the extension of sanitation and medical services, as well as breakthroughs in technology and disease treatment.
Nordic nations often appear at the top of rankings for the world’s greenest places, so the countries dominating Yale’s Environmental Prerformance Index (EPI) will come as no surprise – with the exception of Norway, which is lagging behind in 17th place.
For a 150-metre-high wind turbine standing in churning ocean waves, the forces acting on it are enormous. To stay upright, the structure is anchored to concrete and steel foundations drilled hundreds of metres into the sea bed. The process of securing it can take weeks, and costs up to $100,000 a day.
Lightweight blimps and airships running on helium are making a comeback as technology advances, potentially turning them into convenient transportation air vehicles to remote, inaccessible locations in Africa.