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Spot the Difference

In this quick, completely free and entertaining game, we've put together some of our most mouth-watering images for you to take a look at and spot the difference! It's easy to play. So, what do you think? Are you up for the challenge? Play now and get your score at the end!

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Fact Lab

When a crocodile loses a tooth, it is quickly replaced. These reptiles can go through 8,000 teeth over a lifetime. Crocodiles are often confused with alligators, but there are some easy-to-spot differences. An alligator's jaw is U-shaped, while a crocodile has a V-shaped jaw, according to the San Diego Zoo. Crocodiles also have teeth that stick up over their upper lip when their mouths are closed.

The smallest sample that can be clearly observed under a light microscope is a 500 nanometer long object. It is possible to observe smaller objects than this, but their features might be distorted. Anything smaller than 500 nanometers loses detail because of the wave nature of light.

Good news for the women out there. According to researchers, a mother’s genes determine the intelligence of a child. Scientists say that the cleverness gene is carried by the X chromosome.

Fact Lab

Good news for the women out there. According to researchers, a mother’s genes determine the intelligence of a child. Scientists say that the cleverness gene is carried by the X chromosome.