People can undergo a sudden change of thinking and loyalties under threat of death or intense social pressure and isolation from friends and family.

From year to year environmental changes are incremental and often barely register in our lives but from evolutionary or geological perspectives what is happening is explosive change.

Doing all we can to combat climate change comes with numerous benefits from reducing pollution and associated health care costs to strengthening and diversifying the economy by shifting to renewable energy among other measures.

When I was at drama school I wanted to change the world and thought I had some great wisdom to impart to people about humanity. Now that I'm older I know enough to realise that I know nothing at all.

The damage that climate change is causing and that will get worse if we fail to act goes beyond the hundreds of thousands of lives homes and businesses lost ecosystems destroyed species driven to extinction infrastructure smashed and people inconvenienced.

When you look at all the miracles attributed to Jesus they're all about change.

Normal social behavior requires that we be able to recognize identities in spite of change. Unless we can do so there can be no human society as we know it.

Any film I do is not going to change the way black women have been portrayed or black people have been portrayed in cinema since the days of D.W. Griffith.

When you're a catalyst for change you make enemies - and I'm proud of the ones I've got.

My point is that perceptual bias can affect nut jobs and scientists alike. If we hold too rigidly to what we think we know we ignore or avoid evidence of anything that might change our mind.