A whole bunch of big technological shocks occurred when Asian innovations - paper, gunpowder, the stirrup, the moldboard plow and so on - came to Europe via the Silk Road.

Artificial lighting, air-conditioning, and automobiles, all powered by fossil fuels, swaddle us in our giddy modernity. In our ergonomic chairs and acoustical-panel cubicles, we sit cozy as kings atop 300 years of flaming carbon.

Americans are willing to cheer on politicians who denounce bureaucratic overreach and job-killing red tape in abstract terms. But they turn out to like specific regulations against toxic chemicals in their drinking water.

The queue of activists, interest groups, and ordinary people wringing their hands over what a President Donald Trump might do in office is long, and environmentalists are at the front of the line.

If I was prime minister, I would declare a state of emergency on climate change.

What happened to Haiti is a threat that could happen anywhere in the Caribbean to these island nations, you know, because of global warming, because of climate change and all this.

We deserve quality jobs that pay a living wage, lower college tuition, action on climate change, and comprehensive immigration reform.

This is a truth that should be repeated like a mantra: to have any chance of a ful - filling life, we require not only clean air and a steady climate, but also an abundance of meadows and woodlands, rivers and oceans, teeming with life and the mass existence of other living creatures.