The world seems no closer to defining truth today than the ancient philosophers were. And yet we cannot do without it.

If our reliance on technology has accelerated climate change, maybe technology can fix the problem too. Would it work? Should we try it?

Synthetic chemicals have become embedded in all aspects of our lives. What will it take to reverse their toxic effect—on our bodies and on our world?

Is it a passing phase, or is the era of democratic institutions, universal values and common decency over?

As Israel marks 70 years of statehood, we asked political scientist and peace negotiator Menachem Klein about his nation’s fulfilled expectations, its missed opportunities, and the road to peace.

Insight Video: The 20^th-century Age of the Dictators is over, but that doesn’t mean it can’t come back in a different form.

Why does America’s Christian Right take such an active interest in how we view and use scientific findings—to the point of creating its own version of science?

We’ve all seen headlines about the dangers inherent in social media. Is it time to delete all your accounts?

Are we really as good as we like to think we are? For that matter, are other people as bad as we tend to think they are?

Insight Video: More and more people are streaming into the world’s cities, magnifying already serious issues such as pollution, waste management and disease. What should we expect in the coming decades?

Insight Video: Our food supply may well become the greatest challenge of the century. And directly linked to it are dwindling global water reserves. Will we have enough of either to survive? Each of us holds the key.

Politicians often promise change, yet they seldom deliver. Still, we keep hoping that next time will be different. It’s a vain hope, and here’s why.

Africa’s population boom makes it ripe for commercial exploitation, and foreign investors have been quick to spot the opportunity. How does Africa’s future look?

Coming to grips with the reality of a world freighted with sorrow, betrayal and disappointment means confronting not only the failures of those we’ve trusted but also the part we play.

David Hulme interviews Australian science writer and author Julian Cribb about what it will take for the human race to make it through this century.

The food we produce today could adequately feed the world, yet we throw it away by the tons. Not only do millions go hungry as a result, but our wastefulness has a direct environmental impact.

With the world’s number-one virtual currency so much in the headlines and yet so little understood, it’s a good time to look at its origin, volatile price—and surprising environmental implications.

Insight Video: Why has no nation, until now, been willing to declare Jerusalem the capital of the modern state of Israel? A brief look at history provides the answer.

If you believe life on this planet will go on indefinitely, then your brain may be playing tricks on you. How can we see beyond what we think we know?

Insight Video: The human brain is easily fooled into believing things that simply aren’t true. When it comes to life-and-death issues, that can be disastrous.