Nuclear reactors

When the universe formed, there was hydrogen, helium with a light smattering of lithium – every atom in the universe heavier than a lithium atom was created inside a star. Stars like our Sun can produce atoms up to about the mass of iron. Every heavier atom formed in one of the rare stars heavy enough to end their lives in the titanic explosion of a supernova. 
There have been three major accidents at commercial nuclear reactors – Three Mile Island (1979), Chernobyl (1986), and Fukushima (2011). Let’s take a look at each of these accidents to see what happened.
What d’ya say – want to design a nuclear reactor? And why not? It’s a slow day, and what else are we going to do?
The downside of gift-giving, nuclear power redesigned, and a look at one of our first "industrial" foods.
Energy needs worldwide are expected to increase for the foreseeable future, but fuel supplies are limited. Nuclear reactors could supply much of the energy demand in a safe, sustainable manner were it not for fear of potential releases of radioactivity. Such releases would likely deliver a low dose or dose rate of radiation, within the range of naturally occurring radiation, to which life is already accustomed.