Stuart Sutherland

Study the most famous mass extinction of all: the disappearance of more than half of all species, including the dinosaurs, at the end of the Cretaceous period, 65.5 million years ago. Follow the clues that suggest an extraterrestrial impact caused a cascade of catastrophes.

Five mass extinctions have occurred in the last 500 million years. Focus on the first of these, which extinguished the tropical paradise that flourished in the Ordovician period. Did plate tectonics initiate this radical transformation? Or could the cause have been extraterrestrial?

Turn back the clock to Earth's earliest epoch, focusing on these questions: How did the solar system form and why do we live on a layered, differentiated planet? What do these events and the formation of the moon have to do with the evolution and development of life on Earth?

Hunt for the fishapod - the missing link between fish and four-limbed vertebrates, or tetrapods. Begin by investigating some "living fossils," including the celebrated Coelacanth. Then join the expedition led by paleontologist Neil Shubin that discovered Tiktaalik, a fossil fishapod that made worldwide headlines.

Probe possible scenarios for the origin of life, from the "warm little pond" filled with organic compounds that Charles Darwin envisioned, to deep ocean environments energized by volcanic vents. Sharpen the search by defining the properties that the earliest life must have had.

Search for the earliest vertebrates, which arose from chordates - animals with a rod-shaped notochord. Also probe the mystery of an extinct chordate called the conodont, which is valuable in oil exploration. Finally, discover why we have calcium phosphate skeletons.

Earth's fossil record is punctuated with episodes when large fractions of all species abruptly disappeared. Examine the distinction between background extinction and mass extinction. Then look for factors that lead to these periodic catastrophes, and search beyond Earth for a possible explanation.

Begin the story of life on Earth with an overview of the unifying idea that will govern your exploration. Called Earth system science, this approach views Earth as an integrated network comprising the lithosphere, hydrosphere, atmosphere, and biosphere. Sample the complex interactions between these realms.

How accurate are portrayals of dinosaurs in today's media? Learn what the fossil record says about how dinosaurs actually looked and lived. Also, probe the theory that dinosaurs were warm- rather than cold-blooded, which has important implications for their behavior.

Mammals evolved at the same time as the dinosaurs but did not come into their own until well after their much larger competitors went extinct. Trace the rise of mammals and their domination through a series of glacial cycles, including the present interglacial period.