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Testosterone is primarily made in the testes, and creates many of the characteristics we see in adult men. from www.shutterstock.com

You need more than just testes to make a penis

Disorders affecting penis development are among the most common birth defects seen in humans, and rates are on the rise.
Statistics on Australian Facebook users show no decrease in numbers since the Cambridge Analytica scandal first received public attention. AAP/LUONG THAI LINH

Why are Australians still using Facebook?

Some Australian Facebook users are more worried about over-sharing by friends than the privacy and security of their personal information.
Violence towards animals can never be condoned, whether in horse racing or to animals in general. Shutterstock/gabriel

The shocking use of ‘jiggers’ in horse racing

The outcry over allegations that electronic devices may have been used in Australian racehorse training highlights inconsistencies in our attitudes to the use of such devices on animals in general.
Can’t sleep: these cloned macaque monkeys are missing a gene involved in regulating the sleep/wake cycle. Chinese Academy of Sciences via AAP

Cloning monkeys for research puts humans on a slippery ethical slope

Researchers in China have produce a world first: gene edited, cloned macaque monkeys. They say such animals will be vital for research on human health – but ethical concerns remain.