Racists have dominated the US one way or another since the US was founded — aside from occasional interludes.

We must reject the idea that the state should be able to listen in on all conversations — even with a search warrant.

China is thinking about permitting all families to have two children.

I think it would be a mistake to open the door to more population growth so early. The world population is still going up, and China's current population may be unsustainable.

The need for labor to care for old people will give China full employment if it does not ruin things with more births.

Ocean acidification, together with heating, will cause an upheaval in phytoplankton populations.

Since phytoplankton do most of the world's photosynthesis, and generate most of the world's oxygen, this is playing with disaster.

On the danger of privileging centralized high-tech "magic bullet" solutions and disregarding other options.