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Written by Sarah Kellett Cross-species communication between citrus plants, bacteria, jumping plant lice and wasps begins with a fresh, minty smell.

Here’s a hands-on puzzle to get you thinking! It’s a river crossing that will reveal information about how networks operate.

Written by Michele Weber Coral reefs have much in common with rainforests: both are full of life, but are low in nutrients. How is that possible? As far as a coral reef goes, it’s because marine sponges produce waste that contains food that other reef animals can eat.

Written by Sarah Kellett Atop a blade of grass waits a baby worm. Sheep graze all around in the South Australian pasture, ripping up mouthfuls of juicy greenery. The worm quivers as a mouth nibbles nearby. Then finally, the moment arrives.

Welcome to Megafauna Monday, where we help you chase away the post-weekend blues by showcasing some of the mighty beasts that once roamed the planet.

DNA analysis of feathers confirms a recent sighting of the elusive night parrot. One of Australia’s rarest birds, this sighting is the first time a night parrot has been caught on camera.

Giant wombats, short-faced kangaroos and the largest land lizard to ever have lived are just some of Australia’s megafauna. These large animals have mostly gone extinct. However, the cause of their extinction is still a matter of debate.

Birds are an important part of many ecosystems. New Australian research shows that bird feathers could be used to measure just how healthy some ecosystems are.

Africa’s rhinoceros populations are under threat – only 5000 black rhinos and 20 000 white rhinos are left in the wild. A major cause in their decline is illegal hunting for their famous horns, used in ornamental weapons and traditional Chinese medicine.

How would you find out where to strike gold? Turns out termites might have the answer.