We are all seeing rather less of the Sun. Scientists looking at five decades of sunlight measurements have reached the disturbing conclusion that the amount of solar energy reaching the Earth's surface has been gradually falling. Paradoxically, the decline in sunlight may mean that global warming is a far greater threat to society than previously thought.
Between the blue sky above and the infinite blackness beyond lies a frontier that scientists have only just begun to investigate. In "At the Edge of Space," NOVA takes viewers on a spectacular exploration of the Earth-space boundary that's home to some of nature's most puzzling and alluring phenomena: the shimmering aurora, streaking meteors, and fleeting flashes that shoot upwards from thunderclouds, known as sprites.
The Census of Marine Life - a ten-year effort by scientists from around the world to answer the age-old question, "What lives in the sea?" It was an international effort to asses the diversity, distribution, and abundance of marine life in our ocean, and the project offically concluded in October 2010.
Ben Fogle and Victoria Pendleton are guided by professional mountaineer Kenton Cool, a veteran of twelve Everest summits. As they head up the mountain, into the notorious "death zone", physical exhaustion, extreme conditions and misfortune will test the pair to their limits, 65 years after Edmund Hillary and Tenzing Norgay became the first climbers known to have reached the summit. Since that day in 1953, more than 4000 people have successfully climbed Everest but nearly 300 climbers have died on her icy slopes. As Ben and Victoria begin their expedition and face their fears, they know Everest will be life-changing.
2018 • Environment