Our bodies are also made up of living cells, the antibiotics have to distinguish between the cells in our bodies and the cells of the bacteria.
Is it possible to be too clean? Scientists are investigating the "hygiene hypothesis".
Are porcupine quills poisonous? Well no, let's start with the basics...
Computers are great tools, but they can also be mystifying. Sometimes a program will just stop working correctly for no apparent reason. It could just be a random glitch that can be solved by restarting the machine, but sometimes the solution is not so simple, especially if at the root of the problem lurks a computer virus. Learn more on this Moment of Science.
Why is it that young children always get ear aches, but adults never do? Find out on this Moment of Science.
Since bacteria can build resistance to antibiotics, is it wise to use antibiotic ointments? Find out on this Moment of Science.