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Friendship led ancient humans to cooperate and gain an edge over predators. Compassion is seen among 25 primates and other animals. Today we explore these qualities and meet scientists investigating the role of friendship in our evolution and our lives in the modern world.

Today we meet the people at the forefront of studying alpine plants - including how trees and plants survive in deep snow and ferocious winds.
 
We visit the mushroom lab to discovery why fungi are essential to life on earth and find out what seed collection in the Colorado mountains is teaching us how to adapt in a changing climate.
 
And while we're talking plants - Professor Peter Bernhardt of Missouri describes the thrill when the seventh millionth species was revealed and listed at his own formidable herbarium.
 
All that, plus meeting the winner of the 2023 Jak Kelly Award for his fascinating research on how stars are tearing apart planets - could this have been the history of our own planet Earth?

Sir Mark Oliphant of Adelaide was the main person missing from the film Oppenheimer. 

It was Sir Mark who carried the letter from European scientists to New York to convince the American President that Hitler was trying to make an atomic bomb and needed to be beaten to the chilling quest. It led to the Manhattan Project.

Mark also gave us microwave power, initially to equip planes, later to give us microwave ovens; he helped establish the ANU; was the first President of the Australian Academy of Science and became governor of South Australia.

He was the 'right hand man' of Sir Ernest Rutherford of NZ who revealed the atomic nucleus and won the Nobel Prize in 1916. 

It is often reported that they "split the atom" and so enabled the incredible power therein to be released. 

It was this, as well as the Manhattan Project, that made Sir Mark Oliphant such a voice for peace and tolerance, as this Science Show from 1986 remembers.

The Iter Tokamak nuclear fusion reactor is due for completion next year. In the US, a smaller cheaper reactor is also gearing up.

Join Robyn Williams and meet scientists at one of the world’s centres for the study of climate and weather.

Microplastics are everywhere and impacting ecosystems.