Yahoo is expected to announce Monday that it's acquiring the social media site Tumblr, in a deal The Wall Street Journal and other news outlets are reporting to be worth about $1.1 billion. Some analysts are calling the acquisition an effort by Yahoo to be "cool and relevant" again.

California is about to become the first state to require shore power at its ports. A new law requires at least half of a shipping line's fleet to shut down their diesel engines and plug into shore-side electric power when they unload their cargo. It's part of a larger effort to cut pollution at the state's busiest ports. But costs have been a sticking point.

More and more gardeners are bypassing the local nursery and instead starting their veggies from seed. Seeds are often cheaper and they give growers a bigger choice of varieties. At a community garden in Venice, Calif., students learn the ins and outs of gardening from scratch.

Some political columnists say President Obama needs to exercise more "leadership" to bend a divided Congress to his will. But congressional Republicans have little incentive to cooperate with the president. And the more he "leads," the harder it may be for them to follow.

David Greene and Steve Inskeep have the Last Word in business.

TV is still a huge topic of conversation on and offline, according to recent research. In fact, conversation about TV is growing in the last few years. And face-to-face word of mouth still has tremendous power when it comes to attracting new viewers to a show. Despite all of the new, and popular, digital platforms vying for viewers attention, TV still seems to be the most influential medium when it comes to shaping American culture. NPR's Elizabeth Blair reports.

David Greene talks to regular contributor Cokie Roberts about how a barrage of controversies over Libya, the IRS and reporters' phone records could affect President Obama's agenda and the 2014 elections.

What happens when fans stop talking about a show that used to be their favorite? Take "American Idol," for example. Last weeks' finale was way down from last year's finale. It was the first time a finale did not reach the 20-million mark. NPR's Neda Ulaby reports on shows that are abandoned by their fans.

Closing arguments in the lawsuit challenging New York City's "stop and frisk" policy begin Monday in federal court. NPR's Margot Adler looks at how each side has presented its case so far.

Officials in Connecticut are warning commuters to brace for travel chaos Monday morning and throughout the week. They say lengthy detours and hours of backups are likely as workers repair damage caused by the collision of two passenger trains on a portion of the New York-New Haven line on Friday. Steve Inskeep reports.