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Submit ReviewLast year scientists reported radar evidence of a recent volcanic eruption on Venus - and this week a paper in the journal Nature Astronomy describes at least two more.Another study this week suggested a method for tackling greenhouse gas emissions from fertilised farmland.
Guest: Dr Jonathan Webb, ABC Science Editor
Brainteaser (answer in the audio):Fred drives to visit a friend at an average speed of 30km/h.Late at night when there's no traffic, he drives home at an average speed of 60km/h.What is his average speed for the round trip?
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