I'm a little tired of reading and writing about sunscreen. Maybe it's not the actual reading and writing that has me worn out. Maybe it's the realization that I keep reading and writing about sunscreen yet the information is just not sinking in with the masses of sun-hungry people out there -- according to the EPA, there has been a staggering 1,800 percent increase in malignant melanoma cases since 1930. Recent figures show a shocking rise in skin cancers among those in their 20s and 30s.

The experts at Canyon Ranch are weighing in on sunscreen. So here I go again, with some more about this tiring topic.

• Sunscreen contains unique chemical components which absorb ultraviolet (UV) light. When applied to the skin, the chemical molecules form an invisible, protective layer that repels the penetrating UV rays. It also helps prevent premature aging and pre-cancerous growths.

That's Fit blogger Jonathon Morgan wrote on May 25 about five sunscreen myths. In the spirit of Skin Cancer Awareness Month, it seems appropriate to mention this thought-provoking news here on this site.

I just heard a radio commercial about a certain sunscreen, claiming the product is so good consumers need only apply the lotion one time during an eight-hour time frame. It seems, according to the following list of myths, this is not exactly true.

Myth #1: Sunscreens protect all day.
Fact: Regardless of the SPF or what the label says, sunscreens must be reapplied every two hours because active ingredients in most products break down when exposed to the sun.

Skin cancer awareness month doesn't arrive until May, but Olay and the American Society for Dermatologic Surgery have already chosen their spokesperson for the 2007 Skin Cancer Takes Friends campaign.

Emmy-nominated Desperate Housewives actress Marcia Cross will kick off a nationwide free skin cancer screening and education initiative to alert Americans about the importance of early detection and prevention in the fight against a disease that has affected her personally.

"I'm proud to be part of a cause that is near and dear to my heart," says Cross. "Having had two family members suffer from melanoma, I've come to understand the importance of skin cancer detection and prevention. Knowing what I know about the dangers of sun exposure, I take extra care to protect myself with a large hat, sunglasses, daily UV protection, and of course, an annual screening."

Cross has become an partner in the crusade against skin cancer so she can encourage people to protect not only themselves but their family members and friends too.

Beginning on April 1, log onto skincancertakesfriends.org to find a dermatologist offering free screenings in your area. Take a friend with you to your screening during the months of May, June, and July and each of you will pay not a penny.

Many people don't know just how dangerous skin cancer can be. Yet it's the most common form of cancer in the United States and the incidence of melanoma -- the deadliest form of the disease -- is rising faster than any other cancer. Right now, one in five Americans will develop skin cancer during their lifetimes. And every 67 minutes, someone dies of melanoma.

Screening is a must for everyone -- regardless of skin color, ethnicity, age, or geography. So mark your calendar for April 1 if you'd like a free screening. If money is not an issue, make an appointment today.

If you live in the northern hemisphere, we are fully into the fall season. In the southern hemisphere, they are enjoying spring, and looking forward to the upcoming summer. To maximize daylight hours, we turn our clocks ahead one hour each spring, and turn the clocks back one hour each fall. However, this has become a bit of a debate in Australia, as Queensland Premier Peter Beattie is digging in his heels, locking his knees, and crossing his arms against his chest in refusing to follow fellow countrymen in Western Australia when it comes to considering the policy of instituting daylight saving time.

Beattie is well-intentioned but ill-informed in his concern that the extra hour of light might increase the already high risk of skin cancer in Queensland. Adding an extra hour at the end of the day -- or the beginning of the day -- depending on how you want to view it, will not increase skin cancer risks resulting from excessive exposure to sunlight. The hours of the day when the sun is most damaging, and most dangerous in increasing skin cancer risks, is the middle of the day from 10 a.m. to 4 p.m.

According to The Skin Foundation, to reduce skin cancer risks, we need to protect ourselves year-round by staying out of the sun during peak hours of 10a.m. to 4p.m., by wearing a broad-spectrum sunscreen with a sun protection factor SPF 15 or higher, wearing a broad-brimmed hat and UV-blocking sunglasses, avoiding the use of tanning parlors and artificial tanning devices, keeping newborns out of the sun, teaching children good sun-protective practices, examining skin from head-to-toe once a month, having a professional examination annually, and avoiding sunburn.

For more information about skin cancer myths and fact, read Skin cancer myths debunked by dermatologists.

The sun's damaging rays can reach us even when we are relaxing inside, sitting in our cars or hiding behind a pair of sunglasses. Most people are unaware of the fact that windows, shade and sunglasses do not shield us from all of the sun's power. In fact some of the sun's most dangerous radiation is able to travel through standard glass or in and around sunglasses.  Standard window glass used for residential and commercial use filters out UVB radiation. Unfortunately, UVA and infrared radiation, which cause heat, are readily transmitted through standard glass.

Fortunately window makers and the sunglass industry have clued into these facts and are beginning to market more protective products. The variety of new window products that are flooding the market will likely be confusing to consumers. Some products filter out certain types of harmful rays, while other window panes are better protection for the other categories. The choices range from laminated glass to tinted glass to spectrally selective and UV-blocking insulating glass. The final note in sun protection when sitting near a window, be it in a home, office or car, is to remember that the window is not the exclusive form of protection for your skin. Wearing sunblock will help, a wide brimmed hat for the car is a smart option, a light weight, long sleeved shirt will also give your skin another shield against the sun.

If you don't think staying out in the sun for long periods of time puts you at greater risk for skin cancer -- or that a wide-brimmed hat and sunscreen are all you need to be safe from the damaging rays of the sun -- you might be interested in what MoleMap, a melanoma surveillance program in Australia, discovered during a study of New Zealand farmers and skin cancer rates. I was surprised -- and not in a good way -- by the results of the study.

According to the study, these farmers take sun safety very seriously and observe most of the advised sun safety practices of wearing wide-brimmed hats, sunglasses, protective clothing and sunscreen. Yet, with all those preventive measures, half of the New Zealand farmers, or close family members, have been diagnosed with skin cancer. The unavoidable truth is that the work they do requires them to be out in the sun for as long as eight hours a day.

MoleMap general manager Gavin Foulsham is quoted as saying, "We are getting absolutely hammered with ultraviolet rays from the hole in the ozone layer, and our skies are very clean, so we don't get the protective benefits of pollution either, which ironically caused the hole in the first place." The farmers are being asked to pay close attention to any changes to the skin that could indicate skin cancer and to get it checked right away. For all of us who are not required to work outdoors, this is a cautionary tale of why it is essential to take sun safety seriously and to stay out of the sun for long periods of time.

For sun worshipper Shonda Schilling, being diagnosed with Stage 2 melanoma was an unbelievable shock and a life-changing wake up call to the dangers of too much sun. As a result, Shonda and her husband Curt Schilling -- former Arizona Diamondbacks pitcher -- founded the Shade Foundation in a mission to eradicate melanoma through the education of children and the community in the prevention and detection of skin cancer and the promotion of sun safety.

The Shade Foundation provides shade structures for recreational areas on school grounds, and offers an extensive online resource of educational information and programs to raise awareness for sun safety. According to the American Academy of Dermatology and Shade Foundation, skin cancer is an unrecognized epidemic. Statistically, one in five Americans will develop skin cancer, and the diagnosis of younger adults with skin cancer has increased sharply. Half of all new cancers in the United States are skin cancers.

To be sun safe when going outdoors, they recommend sunscreen, a broad-brimmed hat and sunglasses. And stay away from tanning beds -- because occasional yet intense UVA exposure from tanning beds actually poses a greater risk of melanoma skin cancer than does spending long hours in the sun. To learn more about sun safe activities for kids and young adults, programs, educational materials, and creating shade, visit the Shade Foundation.