Satellite and space expert Dr Stuart Eves stressed the large uncertainties involved in tracking the "decay" of satellite orbits (their slow fall back into the Earth's atmosphere).

BBC: Nasa refines satellite crash time

While inclusion of a Figure 4 is not essential for the purpose of illuminating the statistical flaws in the Douglass et al. "consistency test", such a Figure would clearly show the (currently large) structural uncertainties in radiosonde-based estimates of the vertical profile of atmospheric temperature changes.

WSJ: Climate Emails: Science and Candor

Statoil engineer, Michel Myhre-Nielsen says that high uncertainties, big risks, and large investments are all part of carbon sequestration plans.

NPR: Scientists Hunt for Solution to CO2 Problem

Even after the long-awaited reports of two large long-term clinical trials designed to answer the question, we still have uncertainties.

CNN: Screening for prostate cancer? Patients should decide