AHEATED RESPONSE Probing 2-D materials with high-energy particle beams reveals how these superthin films perform when the heat is on.
SOAKIN’ UP SUN New materials can switch from transparent pane (right) to dark-tinted solar cell (left) and back again.
Jia Lin/U.C. Berkeley
PARTICLE POWER Fifty-year-old fusion predictions didn’t pan out, but scientists haven’t given up on harnessing the power of the stars. ITER, an international effort to build a fusion reactor in France (shown above), is well under way.