NASA has been into great projects recently and one of the most high-profile projects has been to track historical average global temperature. In January 2016, the agency released data that showed 2015 had been the hottest year on record.

 "Today's announcement not only underscores how critical NASA's Earth observation program is, it is a key data point that should make policy makers stand up and take notice - now is the time to act on climate," said NASA Administrator Charles Bolden in a statement at the time. Since then, NASA's monthly updates on temperature delivered a steady dose of dread as month after month was declared the hottest recorded.

Now Donald Trump's first NASA transition team pick is Christopher Shank, a Hill staffer who has said he is unconvinced of a reality that is accepted by the vast majority of climate scientists: that humans are the primary driver of climate change. Shank previously worked for Rep. Lamar Smith, a Republican congressman who played a key role in dragging out debates on the basic nature of climate change at a time when the science is settled and action is urgent.

Shank's appointment dovetails with threats from Trump's advisors to scrap NASA's research on climate change.

 "I believe that climate research is necessary, but it has been heavily politicized, which has undermined a lot of the work that researchers have been doing. Mr Trump's decisions will be based upon solid science, not politicized science." Walker told The Guardian last week.

David Titley, director of the Center for Solutions to Weather and Climate Risk at Penn State, wrote in response, "We can measure the Earth as an entire system only from space."

NASA works with the National Oceanic and Atmospheric Administration (NOAA) to measure climate changes. NASA's role includes developing observational technologies.

Shank's longtime boss Smith, the Republican head of the House Science, Space, and Technology committee, led an effort to slash NASA's earth science budget this year and in 2011 requested an investigation into the "politicization of NASA."

Smith is obsessed with combatting what he has called "climate religion." Among other things, Smith has accused scientists with NOAA of altering peer-reviewed data that challenged a key argument of climate deniers, the notion that the global temperature rises have stalled.

Shank was Smith's deputy chief of staff from 2011 to 2013, before becoming a senior staffer for the House science committee, which Smith has led since 2012. Before the House, Shank worked at NASA between 2005 and 2009, serving in various roles, including as chief of strategic communications. He did not respond to a request for comment.

At the September 2015 panel, Shank went on to question humans' role in climate change, repeatedly recommending that attendees read the work of Judith Curry and Roger Pielke. "I find them to be the best source of commentary on climate issues and what to do about it," he said. At one point he repeated Curry's blog URL twice, for emphasis.

Pielke, a professor at the University of Colorado, has testified before Smith's committee arguing, "There exists exceedingly little scientific support for claims found in the media and political debate that hurricanes, tornadoes, floods and drought have increased in frequency or intensity on climate timescales either in the United States or globally."

Titley chaired a committee of the National Academies of Sciences, Engineering and Medicine that issued a report last March on the science of attributing weather events to climate. The study indicated scientists now have a strong understanding of how climate impacts extreme heat and cold events and a moderate understanding of how it impacts drought and heavy rain. "When I listen to people like Pielke talk about how we can't show tornadoes have increased, it doesn't negate fact that seas are rising, temperatures are rising, the magnitude and severity of droughts are increasing, as well as impacting our food and our water systems," Titley said.

The other scientist Shank mentioned, Curry, is a professor at Georgia Institute of Technology's School of Earth and Atmospheric Sciences, and is notorious for her view that humans may not be the primary driver of climate change. In a recent blog post, she zeroed in on NASA's Goddard Institute for Space Studies as the agency's hub of what she called "politicized climate science."