The tiny satellites changing how we see Earth

Wular and Dal lakes are among Kashmir's most famous natural treasures, but decades of pollution, encroachment and neglect have taken their toll. Chhavi Sachdev follows conservationists, farmers and local communities as they attempt an ambitious restoration effort. Along the way, ...  Show more

We look at three solutions connected to the “three Rs” – reduce, reuse and recycle. The city of Brussels in Belgium is in the process of moving all 40 municipal nurseries over to reusable nappies – and have managed to do it without their staff kicking up a stink! Also energy comp ...  Show more

CubeSat started life as a student engineering challenge: build a satellite that can fit in a little toy box. But now, as Tim Harford explains, these tiny satellites are changing the way we use space – and economics. 

Lower manufacturing costs, innovative launch vehicles, miniaturized sub-systems and new sensor technologies have resulted in a surge in the number of satellites orbiting earth. The more than 1,300 small satellites orbiting earth means we can now scan any given location on the pla ...  Show more

More than 8,000 satellites orbit Earth, taking photos every day. Food security specialist and TED Fellow Catherine Nakalembe shows how she uses this imagery to help smallholder farmers across Africa prepare for floods, droughts and crop failures. Learn why real innovation isn’t a ...  Show more

If you look up into the night sky, there are around 7,000 active satellites orbiting the Earth. They’re part of our daily life – essential for things like the internet, the GPS in our cars and giving us weather reports. Seven thousand might not sound a lot in the infinite expanse ...  Show more