Interstellar, nominated for five 2015 Oscars, explores the meaning of love. Can a film shed light on such a vast subject, or should we look elsewhere?

That we affect our environment in various ways is beyond debate, but can we alter the planet and its systems to reverse current trends and avert an impending catastrophe, or do we overestimate our power?

The “greenhouse effect” is the natural capacity of our atmosphere to reflect and absorb heat.

Insight Video: We’re losing topsoil at an astonishing rate around the world. Can this lead to the end of agriculture?

Are we future-positive or future-negative? When we look out at the world today, the question of what will happen next is not easy to answer.

Earth’s geological record attests to mass extinctions that have taken place over the ages. But since the advent of the nuclear age, we can bring about our own extinction. Will we cross that line?

The separation of religion and science occurred very recently. For millennia the orthodox view was that the physical world did not stand apart from God.

More scientists are hoping to help people transform their minds. Vision reviews three books offering do-it-yourself instructions for building the best brain ever.

Jacques Cousteau was willing to go to whatever lengths were necessary to protect the seas.