News
- Cosmology
Debate accelerates on universe’s expansion speed
A puzzling mismatch is plaguing two methods for measuring how fast the universe is expanding.
- Earth
How dinosaurs hopped across an ocean
Land bridges may have once allowed dinosaurs and other animals to travel between North America and Europe around 150 million years ago, a researcher proposes.
- Life
Yeasts hide in many lichen partnerships
Yeasts newly discovered in common lichens challenge more than a century of thinking about what defines the lichen symbiosis.
- Anthropology
Humans, birds communicate to collaborate
Bird species takes hunter-gatherers to honeybees’ nests when called on.
