30 Paleontologist Paul Sereno tells why and how he organizes dinosaur-hunting expeditions around the globe. He discusses his ideas about dinosaur evolution and the fossil record. Although rare, fossilized eggs and embryos provide information that fossils from adult animals cannot. One find gave scientists an idea of what dinosaur skin looked like. When paleontologists construct dinosaur models from skeletal evidence, they must make assumptions.
Assumptions sometimes lead to errors.
It's part of the scientific process. 40 Shureice Kornegay describes her adventures while fossil hunting with Paul Sereno. Learn more about Sereno's Project Exploration on the Web site. 42 September gives us the Harvest Moon and the autumnal equinox. The moonless skies near the end of the month allow sunset views of Venus and Mercury, late-night sightings of Jupiter and Saturn, and an early morning look at Mars.