The other week I was reading an article about a mummy found in the alps that has little/no living relatives today. That got me doing some wiki research and I thought my “stream of wiki” was sort of interesting…

http://en.wikipedia.org/wiki/Mitochondrial_DNA
http://en.wikipedia.org/wiki/Mitochondrial_Eve
http://en.wikipedia.org/wiki/Population_bottleneck
http://en.wikipedia.org/wiki/Toba_catastrophe_theory
http://en.wikipedia.org/wiki/Volcanic_Explosivity_Index
http://en.wikipedia.org/wiki/La_Garita_Caldera
http://en.wikipedia.org/wiki/Ordovician
http://en.wikipedia.org/wiki/Ordovician-Silurian_extinction_events
http://en.wikipedia.org/wiki/Doomsday_event
http://en.wikipedia.org/wiki/Gamma_ray_burst
http://en.wikipedia.org/wiki/Pole_shift_hypothesis
http://en.wikipedia.org/wiki/False_vacuum (this actually resonates with an idea i have about the next step of evolution being the creation of a new universe in a computer where the currently-understood laws of physics/chemistry/etc. are changed so humans have super powers)
http://en.wikipedia.org/wiki/Technological_singularity
http://en.wikipedia.org/wiki/Kardashev_scale