George Knapp shares a number of items that have recently caught his attention including an article about time travel and the 'grandfather paradox':
Time Travel Simulation Resolves "Grandfather Paradox"
Blink-182 Co-Founder Tom DeLonge Goes Deep on UFOs & Government Cover-Ups
Why Do Many Reasonable People Doubt Science?
The Absurdities of Cryptozoology
Could dark matter cause some mass extinctions and geologic upheavals?
We should make first contact: scientists say it is time to search for aliens