Democrats Move Forward with Climate Hearings

Should the Democrats move to the left on economic policy?

In the paper “Should the Democrats move to the left on economic policy?” [Ann. Appl. Stat. 2 (2008) 536–549] by Andrew Gelman and Cexun Jeffrey Cai, because of a data coding error on one of the variables, all our analysis of social issues is incorrect. Thus, arguably, all of Section 3 is wrong until proven otherwise. We thank Yang Yang Hu for discovering this error and demonstrating its importa...

Backward waves move cells forward

dvancing cells periodically pull on their substrates to test the environment, say Grégory Giannone, Michael Sheetz (Columbia University, New York, NY), and colleagues. The actomyosin contractions both strengthen attachments to more solid substrates, and break off part of a signaling complex so that it can be carried into the cell. Once that retrograde signal reaches myosin, which is some distan...

Pulling Back to Move Forward

Animal cells can change shape and move by using actin polymerization to drive plasma membrane protrusion. Giannone and coworkers (this issue of Cell) describe how cells periodically pull back on these protrusions in order to sense and respond to the rigidity of their environment.

Affordable Care Act: states move forward with health reform.

Clinical inertia: hard to move it forward.