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Tonight I’ll attend what’s billed as the first and only debate between the major party candidates in San Diego County’s 50th Congressional District. The candidates are incumbent Republican Brian Bilbray and Democrat Francine Busby.

The auto racing industry has a long history of taking casualties seriously and sharing the latest safety information with all of the leagues. Analysts are beginning to closely study what led to two-time Indy 500 champion Dan Wheldon's death on Sunday.

The Obama administration is poised to announce the results of a 10-month investigation into whether faulty electronics played a role in Toyota vehicles' sudden, unintentional acceleration and other safety problems.

Our brains are filled with billions of neurons. Neuroscientist Sebastian Seung explains how mapping out the connections between those neurons might be the key to understanding the basis of things like personality, memory, perception, ideas and mental illness.

A rocket set to launch this week could be the bellwether for President Obama's new vision for NASA. The Falcon 9 rocket was designed by a private company called SpaceX to deliver cargo to the International Space Station. The company is hopeful that one day it will also carry astronauts into space.

Tunisian and Egyptian political activists used Facebook and Twitter to organize protests and publicize breaking news. Harvard's Jillian York discusses the use of social media platforms for digital activism, and cases in which governments have blocked the services or compromised user privacy.

Think we've never heard from an alien? A radio transmission recorded in Ohio and translated into six little numbers and letters suggests there's a chance we have.

Airs Wednesday, October 5, 2011 at 11 p.m. on KPBS TV

Some of Pakistan's best-educated young people are more concerned with class divides than they are with terrorism. The gap between the wealthy and the poor is so deep that a person's standing is easily determined at a glance -- a result of what one student calls "extreme social discrimination."

U.S. success with covert efforts like cyberattacks is making Iran's leaders nervous, analysts say.