What is a Supernova?

A supernova is a massive explosion generated by a dying star. A star in our galaxy goes supernova approximately once every 100 years. The explosion hurls matter into space and can shine as brightly as an entire galaxy for short periods. Stars are giant nuclear reactors, producing energy by fusing hydrogen into helium. Eventually, however, […]

What is DNA?

DNA is a nucleic acid that carries all of the genetic material necessary for cells to develop and function. The letters D-N-A stand for deoxyribonucleic acid. DNA floats freely in the cytoplasm of bacterial cells, and is found in the nucleus of plant, animal, and fungal cells. DNA is made of sub-units called “nucleotides.” Each […]

What is Photosynthesis?

Photosynthesis is the process by which green plants (and some bacteria) change light energy and carbon dioxide gas into usable chemical energy in the form of a sugar called glucose. The overall biochemical reaction for photosynthesis is: Carbon dioxide plus water yields glucose and oxygen gas. Light energy (usually from the sun) and a special […]

What is a Robot?

When we hear the word “robot,” many of us picture human-like machines made of metal. Although there’s some debate on what characteristics define a robot, most scientists agree that a robot is a machine able to automatically perform a task or series of tasks based on its programming and its environment. The idea of the robot […]

What is Fission?

Nuclear fission is defined as a reaction in which the nucleus of an atom is split, releasing energy and radioactivity. Fission occurs when an atom of a heavy element, that is, one that has a large atomic mass, splits into atoms of lighter elements. The products of the reaction have less mass than the starting […]

Facial reconstruction of Jane, a young female Jamestown colonist

   Facial reconstruction of Jane, a young female Jamestown colonist   Stephen Rouse, specialist in 3D modeling for medical applications, utilizes images from a CT scan to digitally reconstruct Jane’s splintered cranium so a 3D model of the skull can be generated. Ivan Schwartz of StudioEIS then explains how they are able to create a […]

AIS: Exploring the Primary Threat to Our Fish

  AIS: Exploring the Primary Threat to Our Fish By ZZ Troutski This day and age holds a great many aquatic invasive species. In the forms of both weeds and fish, species are being moved around so fast – intentionally – that some true damage is being done to native species and habitats. Take Arizona […]