Scientists have worked out why elder children have a higher IQ than younger siblings.
Jonathan Stewart looks at the Great Barrier Reef's role in the climate change debate.
Geoff Watts visits Greenland to investigate the migratory habits of the walrus.
A 385 million year old complete fossil tree sheds light on the world’s earliest forests.
Geoff Watts reports on the sequencing of the genome of the rhesus macaque monkey.
Geoff Watts reports on new fossil findings in China.
Geoff Watts reports on new research on climate change.
Do we make moral judgements based on societal rules or based on our emotions?
Geoff Watts investigates a new microscopic imaging technique.
Geoff Watts discusses the Japanese space agency, plus the week's top science stories.