Weekly: Do sperm whales have an alphabet?; Why dark energy is so weird; US bird flu outbreak

Do whales have their own alphabet? We’ve long thought the clicking sounds that sperm whales make is their way of chatting to each other, but those clicks may be even more sophisticated than we realised. After analysing whale recordings,– the closest thing to human communication we’ve yet seen in animals.

We know very little about dark energy – and it turns out we may know even less than we thought. This mysterious force, which accelerates the expansion of the universe, may be changing in an unexpected way, calling our entire understanding of cosmology into question. This discovery by the Dark Energy Spectroscopic Instrument in Arizona could make room forThere’s a bird flu outbreak in the US, spreading through herds of dairy cows in nine states.

mean we know very little about how fast the virus is spreading. And as officials warn against drinking raw milk, how worried should we be? Quantum batteries, while mostly still theoretical, could make charging your phone or electric car unimaginably fast.Plus: Which breeds of cats

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Weekly: What India elections mean for climate change; why animals talk; “tree of life” for plants247What does India’s election season mean for climate change? Last year India overtook the European Union as the third largest annual emitter of greenhouse gases. And as voters head to the polls in the middle of an intense heat wave, it’s critical whichever party wins continues to push towards the goal of net zero emissions by 2070.
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