Teen drug abuse isn't limited to illicit drugs. Many OTC (over-the -counter) drugs, including cold remedies, laxatives, diet pills, and pain killers can cause serious health problems and even death.
From the development of the four-limbed body plan, the journey of animal life from water to land and the emergence of humans, Great Transformations focuses on the evolutionary changes that triggered the earth's incredible diversity.
Survival of the fittest: Is it raw competition, a level of cooperation indispensable to life, or both? Explore our own spiraling arms race with microorganisms - the only real threat to our existence - and trace the alarming spread of resistance among pathogens that cause disease.
The Mind's Big Bang - 60 minutes
Between 100,000 and 50,000 years ago, something happened that triggered a creative, technological and social explosion, allowing humans to dominate the planet. What forces may have contributed to the emergence of the modern human mind?
Introduces geology concepts such as geologic time, continental crust, plate tectonics, volcanic activity, earthquakes, subduction zones, erosion, and glaciers.
Once again, Lennart Nilsson's cameras take us into the mysterious and beautiful world of the human body, capturing incredible never-before-seen footage.
Provides an introduction into human and plant cells and looks at the primary functions and structure of the cell. Examines how the body repairs damaged cells.
Part 1: Origins: Search for and discover the origin of today's animal life. Part 2: Life On the Move: When we think of animals, we think of movement. Surprisingly, the diverse and graceful ballet of movement may have started with a single group of creatures whose descendents were the first to harness the power of muscles and nerves.
Part 1: The First Hunter - The first animal to develop a head, eyes and a brain also pioneered a new way to survive: it would become Earth's first hunter. Dramatic new evidence points to an unlikely and oddly charismatic subject...the flatworm.
Part 1: The Conquerors: For hundreds of millions of years, animal life resided only in the oceans. And then, in one extraordinary event, something happened that enabled one group of animals to emerge from the sea. Follow scientists as they track how the shape of life transformed to create the animals that led the first successful land invasion and were the first to pioneer flight.
Little on this earth can withstand the violent fury of an F5 tornado. A churning vortex with winds over 300 miles an hour, these tornadoes create immense swaths of death and destruction in a matter of seconds. But today, experts are exploring the supertwister's complex inner working in bold new ways in the hopes of one day being able to accurately predict the occurrences of tornadoes.
In 2009, filmmaker Josh Fox learned his home in the Delaware River Basin was on top of the Marcellus Shale, a rock formation containing natural gas that stretches across New York, Pennsylvania and huge stretches of the Northeast.
Is access to clean drinking water a basic human right, or a commodity that should be bought and sold like any other article of commerce? Stephanie Soechtig's debut feature is an unflinching examination of the big business of bottled water.
A huge bottled-water industry has recently emerged, with the U.S. its largest consumer. But is bottled water actually healthier, safer, or tastier than tap water? A water expert explains that bottled water does not meet the same strict standards in the U.S. as water from the tap, though tap-water quality can vary among communities.
