People have a lot of ideas about how they can protect themselves from the sun’s ultraviolet radiation, but many of those ideas just don’t hold up, and some make things worse!

Our bones are multi-functional body builders, but perhaps their most mysterious function is the production of blood. Scientists now think they have a pretty good idea why this is where our blood gets made.

The Right Sunglasses to Keep Your Eyes Healthy

Howcast - Learn how to take care of fair skin from dermatologist Elissa Lunder in this Howcast skin care video.

As summer intensifies, discover why our skin reacts differently to sun exposure, why some of us tan while others burn, and the essential role of sunscreen and sunglasses in protecting our skin and eyes. Learn the science behind melanin...

Discover the fascinating world of giraffes in this segment, exploring their unique physical characteristics and behaviors. The video also delves into their diet, natural habitat, and the extraordinary strength of their legs for...

In this video, we learn about how sunscreen works to protect our skin from the sun's rays. It explains the difference between sunscreens and sunblocks, and how they filter or reflect the light to prevent it from burning the skin....

The 3 simple ingredients of sun, air and water lead to every type of weather on Earth. The atmosphere is constantly trying to balance heat from the sun with water vapor and air to create a dynamic planet. The unique properties of the...

The 3 simple ingredients of sun, air and water lead to every type of weather on Earth. The atmosphere is constantly trying to balance heat from the sun with water vapor and air to create a dynamic planet. The unique properties of the...

The 3 simple ingredients of sun, air and water lead to every type of weather on Earth. The atmosphere is constantly trying to balance heat from the sun with water vapor and air to create a dynamic planet. The unique properties of the...

The 3 simple ingredients of sun, air and water lead to every type of weather on Earth. The atmosphere is constantly trying to balance heat from the sun with water vapor and air to create a dynamic planet. The unique properties of the...