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"Mercury analyses of the soil surrounding medieval skeletons reveal how the deceased spent their last days. The discovery may change the way archaeological excavations will be carried out in the future."

Short films that can be read or listened to about heredity, trait, DNA, gene, protein, chromosomes. EACH explains what something is and relates it to everyday items.

The National Zoo is home to 2,000 individual animals of nearly 400 different species. Our best known residents are our giant pandas, but great apes, big cats, Asian elephants, birds, amphibians, reptiles, insects, aquatic animals, small mammals, and many others can be found at the Zoo. You can take a virtual visit to the Zoo any day of the week by tuning into our live web cams, which feature many of the Zoo's animals.

Collection of live animal cams

Can't make it to a zoo? Observe animal habits and habitats using one of the many webcams broadcasting from zoos and aquariums around the United States and the world in this inquiry-based activity that focuses on observation logs, class discussion, questioning, and research. Students begin by viewing an animal webcam, making observations, and describing what they see in a notebook or log.

Students explore the genetic changes associated with lactose tolerance/intolerance and how the trait is inherited in families.

free biology images, including organisms of each kingdom, human biology, histology

I didn't go to the activity but looks good and interactive from the description.

WMHT Online Lesson on Learning Evolution: Activity 1: Darwin's Great Voyage of Discovery Activity 2: Observations Lead to a Theory

"The search for extraterrestrial intelligence (SETI) has been going on for over half a century. It has mostly drawn a blank. But once in a while there is a flurry of excitement. Here are some of the highlights."

Webcasts have science literacy! Hard to find. Several literacy sources on the same topic. Able to use media and written forms on the same topic

Environmental Science

Students play the role of birds, go out on the school lawn, and pick up toothpick "stick worms" which have been previously scattered on the lawn in equal numbers of green-stained and unstained. "Birds" are chased away before the "worm population" drops too low. Back in the classroom, the number of green and non-green "worms" are compared individually and for the whole class. Discussion relates the experience to the elements of natural selection. As presented here, it does not lend itself to demonstrating the effects of selection over multiple generations.

Harvard's animation of DNA replication. More suited for high school or college level students.