Geological change usually takes thousands of years to happen but we are seeing the climate changing not just in our lifetimes but also year by year.

I don't think we're yet evolved to the point where we're clever enough to handle a complex a situation as climate change. The inertia of humans is so huge that you can't really do anything meaningful.

If we gave up eating beef we would have roughly 20 to 30 times more land for food than we have now.

I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty. Revere and respect Gaia. Have trust in Gaia. But not faith.

If we gave up eating beef we would have roughly 20 to 30 times more land for food than we have now.

I've got personal views on the '60s. You can't have freedom without paying the price for it.

You mustn't take what I say as gospel because no one can second-guess the future.

There aren't just bad people that commit genocide we are all capable of it. It's our evolutionary history.

There is little evidence that our individual intelligence has improved through recorded history.

One thing that being a scientist has taught me is that you can never be certain about anything. You never know the truth. You can only approach it and hope to get a bit nearer to it each time. You iterate towards the truth. You don't know it.