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Given two choices of attractive mates, female frogs pick the top vocalist. But add a third, inferior male to the mix, and females go for No. 2. The "decoy effect" shapes some human choices, too.

The director of the U.S. Secret Service Kimberly Cheatle has resigned, ending her 29-year career with the agency. This comes in the wake of the attempted assassination of former President Trump.

Gadgets are always popular choices as holiday presents. Linda Wertheimer talks to regular technology commentator Rich Jaroslovsky, of Bloomberg News, about the gadgets he likes. Tops on the list are a Lytro camera, Zik wireless headphones, and a Saeco coffee machine.

Over the past three decades, the U.N. says Afghanistan's forest cover has decreased by about 50 percent — to just about 2 percent of the country's land. The main reason is the illegal harvesting and trade of timber. A visit to Kunar province, near the Pakistan border, reveals that many people, from top officials down, are involved.

The top rebel commander in northern Syria was not impressed with Secretary of State John Kerry's announcement of new direct U.S. aid to the rebels and their political leaders.

Researchers report that the U.S. ranks among the top countries at treating cancers of the brain, colon and breast. But it still lags behind most of Western Europe when it comes to drug abuse, heart disease and kidney problems.

This sleepy town on the west side of Prince William Sound is remote, and it's hit with brutal winter weather every year. Most of the residents live in a single 14-story building called Begich Towers.

British horticulturists figured out how to graft a tomato plant onto a potato plant. The plant, called Ketchup 'n' Fries, has crossed the pond and will be available to U.S. gardeners this spring.

Forbes in Israel has published a first-of-its-kind ranking of the country's richest rabbis. The estimated wealth of the top-ranked rabbi? $335 million. Some self-styled Jewish mystics attract wealthy, high-profile followers who donate huge sums in exchange for blessings and advice.

Secretary of State Clinton is meeting with Israeli leaders in Jerusalem Monday. U.S. relations with Israel have focused less on the Palestinian situation, and more on the chances of a war against Iran.