On the air we breathe, how polluted it is and why, and what can be done to clean it up. Also, how the ways we travel and commute impact the environment.

According to the Environment Protection Agency, the levels of indoor air pollutants are often 2 to 5 times higher than their outdoor levels; and in some cases, can even exceed by 100 times. view more


On water and its various sources - surface water, groundwater, rainwater etc; the threat of pollution and depletion that they face; and ways and means to protect and conserve it.

The water cycle gets all its driving energy from the Sun. view more


On the basic science of climate change, why it is happening, what it means for us, and how the world is trying to cope with it.

A great whale absorbs 33 tons of carbon dioxide from the atmosphere on average, equivalent to planting more than a thousand trees. view more


On the problem of solid waste and its management and control.

Half a million single-use plastic straws are used every day around the world. view more


On good and bad food, and its relation to our health, biodiversity, livelihoods and life.

There are roughly 100 trillion beneficial microbes in the human gut and these weigh approximately 2 kilograms. view more


On renewable energy, its sources and use. But also, on the issue of energy and our access to it, and the linkages between energy and climate change.

In 1879, Thomas Edison invented the light bulb after trying more than 1,600 different filaments, including hair from an assistant’s head! view more


On our huge wealth of natural resources, the strong links that they have with our lives and lifestyles, and the threat of extinction that looms over them.

Nearly three per cent of the ice in Antarctic glaciers is penguin urine. view more


On other issues and concerns of environment and development...

Australia is wider than the Moon. view more