Venus and Mars show how inhospitable Earth could have been if things were just a little bit different.
Scientists are just now unlocking the amazing secrets of how rain is made; some raindrops form around micrometeorites from outer space, others are created by bacteria that float into the upper atmosphere.
2013 • Environment
Which places on earth are poised to generate the next mega-tsunamis and the science of what happens as the wave emerges from open ocean and bears down on land.
2013 • Environment
Explore what drives the strange science behind places like Canada's Bay of Fundy-where water levels rise as much as 50 feet during high tide, and Alaska's Turnagain Arm, where 10-foot tall "bore waves" routinely wash in from the sea.
2013 • Environment
Volcanoes have incredible effects on the weather; eruptions create localized weather phenomena like acid rain and violent volcanic lightning.
2013 • Environment
NASA satellites have mapped Earth's gravity and discovered mysterious spots where gravity is weaker; how earthquakes change the planet's gravitational field.
2013 • Environment
Venus and Mars show how inhospitable Earth could have been if things were just a little bit different.
2013 • Environment
Earth's metallic core makes the planet a huge magnet, generating a magnetic field that protects us from dangerous cosmic rays and solar energy.
2013 • Environment
Blizzards; it's one of the Earth's most beautiful secrets until it turns into a storm that can bring entire cities to a grinding halt.
2013 • Environment
Steamy underworlds hiding mysterious treasures, extreme waters teeming with unique life, and jarring rock formations made of frozen lava.
2013 • Environment
How the cruise of a lifetime turned into a deadly nightmare. Passengers and day trippers were trapped when New Zealand’s most active volcano erupted. Were tourists warned of the danger and could more have been done to prevent tragedy?
Four Corners • 2020 • Environment
Craig Reucassel investigates our transport emissions, which are the second major contributor to our total carbon emissions. He explores how we can make the move from petrol guzzlers to electric vehicles.
S1E2 • Fight For Planet A: Our Climate Challenge • 2020 • Environment
Lucy is born June 2, 2009, in the suburbs of Miami and is still alive in the year 2100. This is her story.
2009 • Environment
In a Horizon special, naturalist Sir David Attenborough investigates whether the world is heading for a population crisis.
Horizon • 2009 • Environment
Filmmakers travel to six continents and 20 countries to document the impact humans have made on the planet.
2018 • Environment
The Alps are known as the majestic mountain range of Europe. But their formation from a collision between Europe and Africa left an unstable structure that is now a classic study in erosion by rivers of water, ice and rock suggesting an even greater former glory. Left unexplained is why the Mediterranean Sea exists between the continents.
S1E13 • How the Earth Was Made • 2009 • Environment