Don Herbert, also known as television's science teacher Mr.Wizard, died at his home Tuesday of bone cancer. He was 89.

Mr. Wizard's target audience was kids (baby boomers: you may already know this) and his lessons taught youngsters to use the thinking skills of scientists through workshop experiments using simple household items. His 1950s series Watch Mr. Wizard was so good it won a Peabody Award in 1954, and Herbert was one of David Letterman' first guests when the show Late Night With David Letterman debuted in 1982. Herbert's show made it to Nickelodeon too and ran from 1983 to 1991. Reruns were shown until 2000. Nickelodeon's Mr. Wizard episodes are available here.

A native of Waconia, Minnesota, Herbert graduated from LaCrosse State Teachers College in 1940; served as a U.S. Army Air Corps pilot during World War II; and worked as an actor, model, and radio writer before reaching fame on Mr. Wizard in Chicago -- and then New York -- on NBC.

He is survived by six children and stepchildren and by his second wife, Norma.

When I sit still in the middle of the day, I fall asleep. I'm not sure if it's a side effect of cancer or of life in general, but as a result, I keep myself moving at all times.

I'm always doing something -- writing, emptying the dishwasher, packing a school lunch, reorganizing cabinets and closets and drawers. There's always something to fiddle with, something to keep my body from crashing into a deep sleep.

My little boys have been playing with Lego all afternoon. For hours they have been content and happy and full of imagination. They've built flying boats and castles and pirate contraptions. My wish: to just sit and watch them, to absorb their words, their sound effects, their interactions.

I tried to just sit and watch, tried to hone my quiet observation skills. And then I fell sleep.

It's a dozing-off kind of sleep that creeps up on me and for brief moments, I am lost to the world, sometimes even dreaming for short periods of time. So I find I am more alert and productive in the study of my children when my mind is busy with some sort of task. It's not my ideal scenario. But I figure it's better to be awake and bonding with my boys -- even if it means I'm multitasking -- than sleeping through their special moments.

My boys are still building -- they are making flags for their ships -- and I'm awake. And writing and preparing dinner too.

Sometimes drinking alcohol is healthy. And sometimes drinking alcohol is harmful. Studies show that one drink per day -- compared with no drinking at all -- can reduce a woman's risk for heart disease and stroke by 50 percent. And other research indicates that older women who drink moderately have better cognitive skills. But there are also downsides for women who drink even moderate amounts of alcohol.

Even as little as one-half drink per day increases the risk of breast cancer -- possibly because alcohol raises estrogen blood levels which can promote growth of breast tumors. Women are also more likely than men to become dependent on alcohol and to experience other consequences too -- including damage to the brain and other organs. One in 13 adults in the United States has a serious alcohol problem -- and at least six million of these adults are women. And because the risk for alcohol-related health issues increase with age, older women should be especially careful of their alcohol intake for the purpose of maintaining health and limiting the odds of a breast cancer diagnosis.

In the interest of balancing the healthful and harmful effects of alcohol, The Harvard Women's Health Watch suggests that women over the age of 65 limit themselves to one drink per day. Or less.

Laugh. Joy. Love & Respect. Choose Happiness. These are the words that appear on the heart-shaped charms on my breast cancer bracelet made by Brighton. I wear it every day because of the uplifting messages that dangle around my wrist and also because one of the charms is a watch -- a real watch, in the shape of a heart with a pink background and inscribed words that say "Live in the Moment." Just before I received this bracelet from my friend -- whose own mother lost her breast cancer battle recently -- I was in desperate need of a watch. I hadn't needed one for the past four years because as a stay-at-home mom, my schedule was dictated not by the clock but by the needs of two rowdy little boys. But I got a job at a preschool and now time is very important. I have to be at work on time. I have to attend meetings and events. I have to chart the departures of children.  I have to leave my job at a certain time. A watch became necessary and just before my job started, my bracelet arrived in the mail. A perfect gift. Perfect timing. A perfect way to stay in tune with the passage of time. A perfect way to stay motivated on my breast cancer journey.

Another charm on my bracelet reads, "Wherever you go, go with your heart." Whenever my bracelet jingles and jangles on my arm, I am reminded to do just this. To go with my heart. To follow my heart. To feel peace in my heart. This bracelet helps me.  It works like a charm.

In 2002, Pamela Anderson publicly announced she had been diagnosed with Hepatitis C, a disease that can lead to liver cancer. She indicated she had contracted the Hepatitis C virus from sharing tattoo needles with her husband Tommy Lee. At the time, she decided to forego conventional medical treatments, relying instead on a healthy vegetarian diet. She credits avocados for her improved liver health.

I am going to venture out on a limb and guess that it has more to do with her overall diet, lifestyle and other factors -- not simply avocados. But there you go, that's what she said.

Anderson is probably best known for her activist activities on behalf of People for the Ethical Treatment of Animals, PETA, but she has also acted as the celebrity spokesperson for the American Liver Foundation and the Canadian Liver Foundation. Hepatitis C is an inflammation of the liver that can lead to liver cancer. Hepatitis C is usually spread by blood transfusion, hemodialysis, and needles. There is no cure.