Picture a ransacked office with open files strewn across the floor, and boxes for computer discs overturned and empty. Imagine the interrogations and threatening phone calls that might have led up to the break-in. Now, envision that scientists are the victims of the incident, and federal bureaucrats are the alleged perpetrators. In “Science Under Siege: The Politicians’ War on Nature and Truth”, writer Todd Wilkinson uncovers eight stories of government scientists whose research was allegedly suppressed by their employers; including the National Park Service and the Environmental Protection Agency. Steve Curwood spoke with author Wilkinson, who began by telling the story of grizzly bear biologist, Dave Mattson.