Sudhir Kumar is trying to answer some of the greatest unanswered questions in biology. How and when did life on Earth evolve? How can scientists identify the genes involved in diseases such as cancer? How does an organism develop from a tiny, fertilized egg into an adult body made up of trillions of cells? Kumar and his team are using new methods and tools to uproot the conventional wisdom of biology. They are giving the tree of life a good shaking.
Until the last century, smallpox killed one out of every ten people. Then Edward Jenner discovered he could prevent smallpox using a virus from a cow. His discovery of vaccines has saved millions of lives.
Roy Curtiss has a new idea for giving out vaccines. He wants people to gulp down the food-poisoning-causing bacterium Salmonella. What on Earth is he thinking?
Twenty-five years after the first AIDS case was reported, there is still no cure or vaccine for this deadly infection. What makes this virus such a tricky target?
It’s easy to see why scientists want to make vaccines for diseases like HIV and pneumonia. These illnesses kill a lot of people. Bert Jacobs, on the other hand, is developing a vaccine for a disease that no one ever catches—smallpox.
Until the last century, smallpox killed one out of every ten people. Then Edward Jenner discovered he could prevent smallpox using a virus from a cow. His discovery of vaccines has saved millions of lives.
It’s easy to see why scientists want to make vaccines for diseases like HIV and pneumonia. These illnesses kill a lot of people. Bert Jacobs, on the other hand, is developing a vaccine for a disease that no one ever catches—smallpox.