The concern now is whether policymakers even understand the meaning of evidence. Whether there is any truth to this descriptor of "fact-free era." Whether policy is going to be made more and more in the absence of scientific input.

Congress, even with its frustrations, is the greatest instrument for justice and human welfare in the world.

The level of concern and anxiety among scientists - and I guess I'd say the science-friendly public - about the place of science in society in government, has gone beyond concern to anxiety.

There seems to be a concern about whether the public appreciation of science has eroded to a point where it has removed science from public debate and public decision making. Whether the public has come to regard evidence as optional.

Every citizen, scientists included, has some obligation to be involved in public affairs and politics.

The concern now is whether policymakers even understand the meaning of evidence. Whether there is any truth to this descriptor of "fact-free era." Whether policy is going to be made more and more in the absence of scientific input.

It is true that when people are appointed to positions and talk without any appreciation or understanding of scientists, well, that gets scientists worried. And when public officials talk about alternative facts, people who have devoted their careers to trying to uncover facts are dismayed.