I don't get a sense that Cheers is revered the way it should be by [younger viewers]. In my mind, it's a show that should always, always, always be in the pantheon. But can it ever mean to future generations what it meant to us?

You have to work with the auto industry, the oil companies, you have to work to develop renewable fuel, whether it's solar or different kinds of fuel.

My job playing Sam Malone was to let the audience in, to love my bar full of people. And that informed my life. I mean, we're so different [in the cast], some of us. Miles apart. [But] when I see anyone from those days, I tap into that instant love for them.

The environmental movement, like all political processes, reacts best to disasters. But these are very slow, very gradual disasters in the making.

Individuals of all ages can make an important difference in the overall health of our ocean by the actions they take every day. Simple things like picking up trash on the beach, recycling and conserving water can have a big impact on the health of our ocean.

We only have ten years to save the oceans

It's not enough to have good thoughts for the world. You must get out there! It is also really important that each person realise their own worth. If you don't think you're good enough, how can you turn around and help save the world?