Chemistry
![B(l)ack to the basics B(l)ack to the basics](/sites/default/files/styles/image_m1/public/articles/66_2.jpg?itok=wBdzJsj5)
B(l)ack to the basics
Scottish chemist and physician Joseph Black did fundamental work on gases and heat.![1962: Rachel Carson broke the silence on a 'killer' 1962: Rachel Carson broke the silence on a 'killer'](/sites/default/files/styles/image_m1/public/articles/shutterstock_1191818803.jpeg?itok=AahXYh4s)
1962: Rachel Carson broke the silence on a 'killer'
With her explosive 1962 book damning DDT, Rachel Carson launched the global environmental movement.![When the chemistry was just right When the chemistry was just right](/sites/default/files/styles/image_m1/public/articles/Chemistry.jpg?itok=Y2EMWijM)