Humans were not made to be experts in everything.

In the tiny world of the cell, segments of DNA called transposons copy and reinsert themselves into the DNA. They eventually produce large repetitive sequences that have for many years been considered useless "junk" or remnants of ancient viral infections. But a new study has uncovered an important function for transposons.

Methodist Dallas Medical Center in 2009 averted an impending outbreak of dangerously infectious bacteria called Acinetobacter baumannii. Although less prevalent than MRSA, Acinetobacter has acquired a similar resistance to common antibiotics. Would it be accurate to refer to this change in bacteria as "evolution"?

For such an intelligent species, humans can sure be stupid.

The economic crisis, the oil spill in the Gulf of Mexico, and the aftermath of a host of other disasters currently plaguing the world can all be traced to a series of senseless decisions. Yale University professor Laurie Santos has proposed that this propensity for human error may have evolutionary links.

Which came first, the chicken or the egg?

Since there could be neither a chicken nor an egg without each already existing in a fully functional state, they both had to have been put in place at the same time. But there are many interdependent parts in the chicken system, and new research has uncovered one of the tiniest--yet most vital--of them.