What did we use for sunscreen before we had sunscreen? We have always tried to avoid the sting of too much sun, but the first commercial sunscreens didn’t arrive until the 20th century. The evidence ...

Answer: That would be magnesium. Magnesium gets extremely hot when it reacts with oxygen in the air. Magnesium has 2 ...

Abstract Herein we report a novel gadolinium-encapsulating iron oxide nanoparticle-based activatable NMR/MRI nanoprobe. In our design, Gd-DTPA is encapsulated within the poly (acrylic acid) (PAA) ...