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Kids Healthworks

Friday, 7 a.m. Discovery Health

"Diet and the Healthy Child." What steps can parents / caregivers take to ensure that their kids are starting out with a healthy approach to living?

Understanding

Friday, 6 p.m. (Repeats Saturday at 2 a.m. and 10 a.m.)

Science

"The Amazing Brain." The brain's intricate organization is revealed through real-life stories of a teenager with an off-the-charts IQ and a child with half his brain removed to control seizures. Innovative medical tools, including 3-D imaging, track the brain in action.

Discovery Health Classroom

Saturday, 5 a.m.

Discovery Health

"Smoke Signals." In record numbers, teens are using tobacco, from cigarettes to smokeless tobacco. Parents, doctors and teachers focus on getting these kids out of the habit before they are locked into a lifelong addiction.

Outdoors Maryland

Saturday, 5:30 p.m. WMPT

"Rabbit Run." The Hills Bridge Beagles from Southern Maryland take to forest and field in search of rabbit, all the while followed by a large and enthusiastic entourage.

"Wit and Fire." The Jack Russell Terrier Club of America, which has headquarters in Lutherville, declares: "A Jack Russell can be equally contented bolting a fox or chasing a toy in your living room, or equally adept at killing a sock in the living room or a rat in your barn." They are also similarly at home competing with others of their kind in races through obstacle courses.

"The Eyes Have It." For centuries before the Industrial Revolution, the industrial wealth of Great Britain was built on an economic foundation of wool production. Herders developed a dog that was "rough and difficult to control," but had a keen instinct: the border collie. Today in Maryland, whether herding sheep or competing in agility trials, the border collie maintains a reputation for high energy, keen eyesight and a herdsman's instinct.

Assignment Discovery

Monday, 9 a.m. Discovery

"Forensic Detectives: Chemistry at Work." Scientists help solve an international mystery by analyzing grains of sand found in a balloon bomb; elsewhere, dogs work as chemical detectives to try to sniff out arson.

Outdoors Maryland

Tuesday, 7:30 p.m. (Repeats Thursday, 5:30 a.m., and Jan. 29, 5:30 p.m. ) WMPT

"In Society's Hands." There was a time, not at all long ago, that Maryland schoolchildren were taught that the bald eagle was on the verge of extinction. Pesticides like DDT were the main culprit in the eagle's demise and, in the late 1960s and early 1970s, the eagle nests that once dotted the Chesapeake shoreline had disappeared. But now the Maryland Department of Natural Resources says bald eagles have returned to the Chesapeake watershed in large numbers. However, the eagle's future may now be endangered by something altogether different, yet preventable: suburban sprawl and the loss of habitat.

"Osprey Heaven." The osprey is a bird that loves the Chesapeake Bay -- so much so that ospreys from Maryland are being caught and shipped to other areas of the country where the species is in decline.

"Sharp Eyes, Red Shoulders." Maryland's population of red-shouldered hawks has dropped over the last 30 years in some parts of the state. That's why dedicated researcher Woody Martin still climbs 60 or 70 feet to the upper branches of mature trees where these majestic raptors nest. There, he collects the young that haven't yet left the nest. On the ground, he weighs, measures and tags them. Then he returns them to their treetop homes. The red-shouldered hawk is an expert hunter with sharp eyesight that lies in wait for prey that scurries across the ground or unknowingly flies too close.

Hubble and Beyond

Tuesday, 8 p.m. and 11 p.m. (Repeats Wednesday at 4 a.m., 7 a.m., noon and 3 p.m.)

Science

"Telescopes in Space." Huge telescopes orbit hundreds of miles above Earth, peering into deep space, capturing images of our solar system and providing scientists with answers about the birth of our universe.

Nova Science NOW

Tuesday, 8 p.m. WMPT, WETA

This new science show looks at mirror neutrons, hurricanes and mysterious noises from sand dunes. It also features a profile of James McLurkin of MIT, one of the world's leading designers of robot "swarms" -- groups of robots that work together.

Assignment Discovery

Wednesday, 9 a.m. Discovery

"Measure for Measure: Lengths and Heights." Measuring time correctly is important in laboratories and the real world. Seafarers and other navigators have long understood accuracy's importance.

Kids Healthworks

Wednesday, 7 a.m. Discovery Health

"SIDS and Safe Sleeping." This episode explores Sudden Infant Death syndrome and how you can you protect your child.

Sky Watch

Thursday, 8:33 a.m. WYPR (88.1 public radio)

Hosts are Jim O'Leary, senior director of technology, IMAX and Davis Planetarium at the Maryland Science Center, and Carol Christian, deputy head of the Community Missions Office of the Space Telescope Science Institute.

Assignment Discovery

Thursday, 9 a.m. Discovery

"Measure for Measure: Time and Temperature." The death of a star doesn't mean the end of its life. At its end, a star seeds the universe with all the elements of the periodic table. Explore the different scientific theories about why and how the dinosaurs became extinct.

Online blog

Read Sun science writer Frank Roylance's weather and astronomy blog, updated daily at marylandweather. com.

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