Time Machine
![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.![Blood vs blood Blood vs blood](/sites/default/files/styles/image_m1/public/articles/64_0.jpg?itok=je3Y6ObT)
Blood vs blood
The discovery of different blood groups made transfusions safe.![1824: The dawn of dino mania 1824: The dawn of dino mania](/sites/default/files/styles/image_m1/public/articles/58_2.jpg?itok=3KHQsNV3)
1824: The dawn of dino mania
The first scientific account of a dinosaur was made 200 years ago.![They broke the atom's heart They broke the atom's heart](/sites/default/files/styles/image_m1/public/articles/65_2.jpg?itok=Rq6lUZle)
They broke the atom's heart
John Cockcroft and Ernest Walton devised the original particle accelerator.![Remembering Srinivasa Sourirajan, the 'father of reverse osmosis' Remembering Srinivasa Sourirajan, the 'father of reverse osmosis'](/sites/default/files/styles/image_m1/public/articles/68_0.jpg?itok=ngWplK9L)
Remembering Srinivasa Sourirajan, the 'father of reverse osmosis'
Dr Srinivasa Sourirajan co-invented the life-saving reverse osmosis water purification process.![Alan Turing: The enigmatic codebreaker Alan Turing: The enigmatic codebreaker](/sites/default/files/styles/image_m1/public/articles/71_1.jpg?itok=IYHe0vuH)