Surfing huge waves can be deadly - and exhilarating. Same goes for the wipe outs. One of the sport's most extreme surfers talks James Williams through the experience.
For backcountry trekkers in Alaska, avalanches come with the territory. The Alaska Avalanche School teaches them how to spot, avoid and provide rescue after one. Jorge Ribas goes to class.
Professor Erle Ellis is proposing a new way to map the Earth's biomes, taking into account the effect humans have had on the planet. Jorge Ribas reports.
The Chesapeake Bay depends on oysters to filter its waters. And nearby communities depend on oysters for jobs. Jorge Ribas reports on the struggles of saving a tradition while looking to the future.
Discovery's Matt Danzico investigates vertical farming, an agricultural concept aimed at growing food and raising animals in skyscrapers in city centers.
Pesticides and fertilizers can wind up where you don't want them. SafeLawns.org founder Paul Tukey stops by Jorge Ribas' backyard and gives him some tips on eco-friendly gardening.
When natural disasters strike - be it tsunamis, earthquakes or floods - they often lead to high death tolls. James Williams discovers how the grisly estimates are attained.
In nature there are some species, both plant and animal, that die after spawning offspring. This week Kasey-Dee Gardner finds out why this phenomenon happens.
Could a single virus destroy humankind as seen in films like Zombieland or shows like The Colony? Why or why not? And if they could, what would such a virus look like? James Williams gets the answers from a virus expert.
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