What does science tell us about dealing with money? Can thinking about money change your behavior? How do monkeys gamble? Is ‘homo economicus’ truly rational? Do some people thrive on financial risks?

Construction matters. Hundreds of millions live and work in houses and schools that will collapse in the next earthquake. Chile and California prove that smart engineering saves lives.

After World War II, the “green revolution” sparked an explosion in farm output in developing countries. With soaring food prices and spreading food riots, what can we learn from the green revolution?

In the brain, dopamine carries signals that make us eat, take drugs and have sex. New research shows that dopamine plays a key role in rewarding mice for aggression.

Pilot errors have dropped 40 percent over 20 years, but on-the-ground accidents have increased. Why have pilot errors declined? What work remains to increase airline safety?

Plug-in hybrids mean more than just extra spending cash for drivers, though. They could offer a new path through the maze of the electric grid, and help to boost the use of alternative energy.

Hybrid cars and fuel cells increase auto efficiency and reduce pollution, but it’s a long struggle from the idea to the reality.

California’s fires are a tragedy, but are human actions making them worse? What is the role of global warming and zoning? Can we build safer houses in safer locations?

How do they form? How do we predict their paths? How can we improve predictions?

Using a chemical reaction that changes color when specific chemicals are present, a new “dipstick” may detect spoilage better than the human nose.