Eating wildlife is probably not the smartest thing that we can do in terms of maintaining the integrity of natural systems.

This much is certain: We have the power to damage the sea, but no sure way to heal the harm.

Use your power to do whatever it takes to secure for humankind an enduring place on this little blue speck in the universe - our only hope.

Any astronaut can tell you you've got to do everything you can to learn about your life support system and then do everything you can to take care of it.

With every drop of water you drink, every breath you take, you're connected to the sea. No matter where on Earth you live.

There's a vested interest in trying to keep people smoking cigarettes.

Ice ages have come and gone. Coral reefs have persisted.