Jim McClintock

Dr. James McClintock (circa 1986) wearing a dry suit prepares to dive below the sea ice in to a -1.8 degree C sea near McMurdo Station, Ross Sea, Antarctica. Visibility under water has been measured up to 500 feet.

Adelie Penguin rookery near Palmer Station, Antarctica.

Leopard seal. Photo by Christopher Srigley.

Sunset in the Lemaire Channel south of U.S. Lemaire Channel. Sometimes called Kodak Alley - one of the most scenic regions of the Antarctic Peninsula.

Two nesting chinstrap penguins on the South Shetland Islands off the northwest coast of the Antarctic Peninsula.

Dr. James McClintock standing in front of 'ghost rookery' (former Adelie colony site near Palmer Station essentially wiped out by rapid climate change).

Gentoo penguin rookery on the western Antarctic Peninsula.

One of the many islands that make up the south Shetland islands along the northwest coast of the Antarctic Peninsula.

Dr. James McClintock on one of the many South Shetland Islands off the northwest coast of the Antarctic Peninsula.

Lone Frank

Lone Frank.

The trailer to Genetic Me: 

Visit Lone's website.

Lone Frank's new Book, The Pleasure Shock, is available now.

Ellen Stofan

Ellen Stofan.

Saturn's largest moon, Titan.

See more photos from the Cassini mission.

Dhaya Lakshminarayanan

1-year-old Dhaya and her mother. Dhaya's mother writes: “This is the proudest day of my life. My baby's very first birthday!! “

Dhaya and her mother enjoying a swing ride in the Fall. Dhaya's mother writes: “Wherever Dhaya sees a swing set, we have to stop immediately. So this is one of the parks that she decided to use the swing set.”

Dhaya and her Mom attending a cousin's wedding.