A look at the taxonomic classification of the tomato plant and the origin, history and development of tomatoes.
Where Did Viruses Come From?
Viruses are not living things - so where did they come from? Scientists have proposed three different hypotheses.
Radiation Effects on the Body
This backgrounder explains the potential effects of radiation on the human body.
Why Don't Fish Freeze in Cold Arctic Waters?
Ever wonder how fish survive in the cold waters of the Arctic and Antarctic? It’s partly because of a brilliant evolutionary adaptation.
Why Scientists Believe in Evolution
Scientists have accumulated so much evidence in the theory of evolution that it is one of the most widely-accepted theories in science.
Should Scientists Clone Extinct Species?
Cloning makes it possible to bring extinct species back to life. But is that a good idea?
Natural Selection in Your Backyard
A study on bird feeders and beak sizes shows how an everyday human activity can affect the evolution of another species.
How to Find a Mate When You Smell Like Dung
Some dung beetles use alternative reproductive tactics to increase their chances of finding a mate. Learn what this tells us about evolution and biodiversity.
How can I obtain a sample of DNA?
Be a biochemist! Learn how to extract DNA from an onion and find out what DNA looks like.
Medical biotechnology allows scientists to make changes to the genomes of living things. What are the pros and cons of having access to techniques like these?
Radiation Effects on Cells & DNA
This backgrounder explains the effects of radiation on cells and DNA.