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...health and safety with hot objects. OK, so let's see. And the weight's gone down to 98 grams. So I'll record that. After one minute, 98 grams. Now I'll pop it back in and give it another minute. [DING] That's another minute up, so I'll do another measurement. It now weighs, oh, 84 grams. I'm just going to give it one more minute and see if the weight continues to fall....

...health of the forest depends on fungus – decaying branches and leaf litter are rich with nutrients, and fungi can ferry these back to living plants. Unearthing the woodwide web NARRATOR Luxurious timber in the luxuriant rain forest. Economics inextricably bound with ecology. Now, biologists are unearthing a new set of relationships fundamental to the forest. Lessons...

...health and defended. It is engineering that puts all this in place. All the material things – from containers of shower gel to satellites – that enable us to live our everyday life are the products of engineering (Figure 1). [Described image] Figure 1 Engineers make all the cool things in the world! (a) Sydney Opera House and Sydney Harbour Bridge; (b) Hubble Space...

...health workers. In remote rural areas of some countries, doctors can make use of computer networks or even mobile phones to make a diagnosis if they are unable to see the patient in person. However, this is by no means universal, and even where such facilities exist they aren’t always available. Information for travellers is also increasingly being made available...

...health as soon as rain arrives. On Earth, there are also regions that are much drier than the UK. Look at photographs in Figure 6 and Figure 7. Both were taken in January and show differences in the availability of water depending on geography and climate. [This is a photograph of a wood. In the foreground, the ground is covered in brown leaves with a few small green...