Today on "World News with Charles Gibson":

Vote 2008:
After her 41-point victory in West Virginia last night, Sen. Hillary Clinton vows to stay in the race for the Democratic nominee. Although Clinton won 20 of the state's 28 delegates that were up for grabs, the math is still very much on Sen. Barack Obama's side. Tonight, Charles Gibson talks to Hillary Clinton, while ABC's David Wright reports on the Obama campaign.

Power of Two:
With rising gas prices, food prices and a foundering economy, many families are struggling to make ends meet. In the third installment of our series, "Power of 2," ABC's Betsy Stark shares two easy steps everyone can take to maintain their finances.

And on our "World News" webcast along with our top headlines:":

Science Fair:
A MoMa exhibit titled "Design and the Elastic Mind" introduces technology you'd expect to see in a sci-fi flick, not in a museum. Lollipops with electrodes that enable us to see with the tongue and a leather jacket grown in vitro are just two of the items on display. New 3-D printing allows someone to use the computer to print furniture from a supply of resin. Sound bizarre? Maybe. But as ABC's Linsey Davis reports designers in the exhibit say this is the future.