Nothing beats weaving through the rush-hour traffic or whizzing past the eternal gridlock that is the Strand.

I'm always running my mouth off and getting myself in trouble, so I'm trying to do it less.

Once you start cycling, the city opens up for you. No longer are you fighting it, hot and frustrated; no longer are you at the mercy of bus drivers, roadworks, decisions made by others and over which you have no control. Believe me, once you've tasted this freedom, you're hooked.

Don't start writing your novel until you know your characters very, very well. What they'd do if they saw somebody shoplifting. What they were like at school. What shoes they wear. Spend days - weeks, months - being them until they thicken up and start to breathe.

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.

Although Mr. Trump will not be able to pull the United States out of the Paris climate accord, he can legally ignore its provisions, in keeping with his questioning of the existence of man-made climate change.

If we brought the mammoth back to Siberia, maybe that would be good for the ecosystems that are changing because of climate change.

Environmental quality was drastically improved while economic activity grew by the simple expedient of removing lead from gasoline - which prevented it from entering the environment.