Biological molecules with Leslie Samuel

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Biological molecules and their structutes.  





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The unit of life, by Leslie Samuel

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A very good introduction to cells, the units of life. A very warm and funny teacher presents the topic.


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How the eye works by Leslie Samuel

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Watch this vivid and clear explantion of how the eye works.

How Blood Flows Through the Heart , by Leslie Samuel

This is a vivid video on how blood flows through the heart.





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The Cardiac Cycle by Leslie Samuel

Watch this very good video on the cardiac cycle.



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Nuclear energy is safe?

This article is about depending on nuclear power and the dangers that goes with production and distribution of the energy.

The accident at an earthquake-stricken Japanese nuclear plant in March made many countries review their plans to build and operate nuclear plants.The people are asking the authorities to reconsider the ethics in having nuclear plants. They are also clamouring to review the present safety measures especially if the plants are old.

Nuclear plants cost a fortune to build, but not much to run. So despite a steep tax on nuclear fuel, they are a cheap and reliable source of power that emits almost no greenhouse gases.

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Forests are not to be treated as infinite

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This is a very good article on valuing the rainforests that we still have with us.

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