Science Week

Science Week:
Dr. John DeTraglia & Mike Caleo

Week 3

Origins of the Philistines



Explainer: How DNA testing works by Dr. Rob Lowenstein


When We Met Other Human Species


Out of Africa


New hope for tackling antibiotic resistance 

Memory Loss treatment

Memory Loss treatment 

Boosting the speed of Photosynthesis


Superior smells

Biological Bulletproof vest

Rocking puts adults to sleep faster and makes slumber deeper



Extinction Theory video



Explainer: How a fossil forms

Role of Cranial Modification

Corn’s long domestication

New dates narrow down when Denisovans and Neandertals crossed paths



What makes a pretty face?

Tune up for LHC

What FamilyTreeDNA sharing genetic data with police means for you  

A basketball-sized rock hit the moon during the last lunar eclipse


Power Words (Vocabulary)

Algorithm - A group of rules or procedures for solving a problem in a series of steps. Algorithms are used in mathematics and in computer programs for figuring out solutions.

Biometrics - A group of technologies used to identify people on the basis of measuring biological features that are unique to them. Fingerprints are a prime example of a biometric technology.

Contour map - A map showing elevations and surface configuration by means of contour lines through points of equal elevation.

Drumlin - Elongated mound of glacial sediment deposited parallel to ice flow.

Esker - A ridge of glacial sediment deposited by a stream flowing in and under a melting glacier.

Evolution (v. to evolve) A process by which species undergo changes over time, usually through genetic variation and natural selection. These changes usually result in a new type of organism better suited for its environment than the earlier type. The newer type is not necessarily more “advanced,” just better adapted to the conditions in which it developed.

Extinct - An adjective that describes a species for which there are no living members.

Fossil - Any preserved remains or traces of ancient life. There are many different types of fossils: The bones and other body parts of dinosaurs are called “body fossils.” Things like footprints are called “trace fossils.” Even specimens of dinosaur poop are fossils. The process of forming fossils is called fossilization. The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.

Genus - A group of closely related species. For example, the genus Canis — which is Latin for “dog” — includes all domestic breeds of dog and their closest wild relatives, including wolves, coyotes, jackals and dingoes.

Geology - The science that deals with the earth's physical structure and substance, its history, and the processes that act on it.

Geologic Time Scale (GTS) - is a system of chronological dating that relates geological strata (stratigraphy) to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.

Glacial striation - Scratches left on bedrock and boulders by overriding ice, and showing the direction of motion.

Glacial valley - A valley occupied or formerly occupied by a glacier, typically with a U-shaped profile.

Glacier - A mass of ice and surficial snow that persists throughout the year and flows downhill under its own weight. The size range is from 100 meters to 10,000 kilometers.

Half-life - The time required for half of a homogeneous sample of radioactive material to decay.

Igneous rock - Any rock solidified from molten or partly molten material. Igneous rock

Kettle - A small hollow or depression formed in glacial deposits when outwash was deposited around a residual block of ice that later melted.

Moraine - A glacial deposit of sediment left at the margin of an ice sheet. Lateral moraine - deposited to the side of a glacier. Terminal moraine - deposited to the front of a glacier. Ground moraine - deposited on the land surface.

Paleontologist - A scientist who specializes in studying fossils, the remains of ancient organisms.

Precambrian - Geologic time (4567 to 542 mya) from the beginning of the Earth to the beginning of the Cambrian Period of the Paleozoic Era.

Predator (adjective: predatory) A creature that preys on other animals for most or all of its food.

Superposition, Principle of - The principle that, except in extremely deformed strata, a bed that overlies another bed is always the younger.

Trait - A characteristic feature of something. (in genetics) A quality or characteristic that can be inherited.

Uniformiarianism - was an assumption that the same natural laws and processes that operate in the universe now have always operated in the universe in the past and apply everywhere in the universe. It has included the gradualistic concept that "the present is the key to the past" and is functioning at the same rates

Vaccine - A biological mixture that resembles a disease-causing agent. It is given to help the body create immunity to a particular disease.

Vertebrate - The group of animals with a brain, two eyes, and a stiff nerve cord or backbone running down the back. This group includes all fish, amphibians, reptiles, birds, and mammals.

Wavelength - The distance between one peak and the next in a series of waves, or the distance between one trough and the next. Visible light — which, like all electromagnetic radiation, travels in waves — includes wavelengths between about 380 nanometers (violet) and about 740 nanometers (red). Radiation with wavelengths shorter than visible light includes gamma rays, X-rays and ultraviolet light. Longer-wavelength radiation includes infrared light, microwaves and radio waves.



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