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Lebanese families have been fleeing the country’s south in the thousands amid escalating tensions and an Israeli bombardment that has so far killed hundreds. Their fear, echoed by many onlookers, is that Israel will accompany the airstrikes with something that has the potential to have far worse consequences: a ground invasion of south Lebanon.

If world agricultural authorities don’t get their act together soon enough, your morning orange juice may disappear from the supermarket shelves – for good. This is how critical the situation has become in the citrus growing world. In Brazil, production has fallen by more than 20%, 60% in Guadeloupe and and plummeted by more than 90% in Florida.

Human prenatal genome editing has not happened yet – as far as we know. Prenatal genome editing isn’t the same as editing ex vivo embryos, like the Chinese scientist did, because prenatal editing involves editing the DNA of a fetus visible inside a pregnant person’s womb – without the intent to affect future descendants. But the societal implications of this technology are still vast. And researchers can already start exploring the ethics by engaging communities well ahead of time.

Alexander von Humboldt (1769-1859) was one of the most famous figures of his time, not only in his native Prussia but throughout the world. In addition to being a leading geographer, climatologist, ecologist and oceanographer, he attached great importance to the dissemination of knowledge to society as a whole.

All parties surely know the likely destructive consequences of such an eventuality for themselves: Israel has the military power to devastate Beirut and other parts of Lebanon as it did in Gaza, while even a weakened Hezbollah could fire thousands of missiles at Israeli strategic sites, from the airport to central Tel Aviv, water supply lines and electricity hubs, and offshore gas rigs.

Summer 2024 was officially the Northern Hemisphere’s hottest on record. In the United States, fierce heat waves seemed to hit somewhere almost every day. Here’s how heat domes, the jet stream and climate change influence summer heat waves and the record-hot summer of 2024.

The Mediterranean’s drying out 5.5 million years ago, known as the Messinian salinity crisis, is the biggest extinction event suffered by the Earth since the meteorite that wiped out the flightless dinosaurs and ended the Mesozoic era 65 million years ago. No one knows yet how long it will take for marine life to recover from the kind of global-scale change that is currently underway.

The acts that apparently led Israel to strike Hezbollah are also illegal under international law. Hezbollah, a nonstate armed group supported by Iran, has no right to use violence of any kind, let alone missile strikes targeting civilians in northern Israel. But under law, hiding explosives in everyday objects makes them booby traps – and in almost every case, using a booby trap designed to kill is a crime.

In contrast to foraging and hunting – behaviors with clearly defined goals – play is undirected. When a pony frolics in a field, a dog wrestles with a stick or chimpanzees chase each other, they act with no goal in mind. But an animal at play is far more likely to innovate – and some of its innovations may in time be adapted into new ways to forage and hunt.