Computer models of global climate became indispensable tools in the last decades of the 20th century as society began to grapple with the impact of human-produced greenhouse gases.

The field known as weather modification grew wildly through the 1950s and 1960s, as aircraft funded by U.S. states and many countries began “seeding” clouds in hopes of stimulating rain and suppressing hail.

The nineteen sixties first snapshot.

The nineteen sixties decade.

The new service will provide reporters with timely responses to their questions about the science of climate change.