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The pyramids at Giza, like dozens of others, are located several kilometres west of the current path of the Nile. Alex Cimbal / Shutterstock

We mapped a lost branch of the Nile River – which may be the key to a longstanding mystery of the pyramids

Why build pyramids in the desert? A centuries-old puzzle may be answered by the slow wandering of the Nile.
Police remove a protester during a transgender rights rally attended by opposing neo-Nazi protesters, outside Parliament House in Melbourne, Saturday, March 18, 2023. James Ross/AAP

Friday essay: ‘me against you’ – Jon Ronson investigates the perpetual outrage of the culture wars

The culture wars have been around forever, but keep taking new forms, and US variants threaten to spill over to Australia – as seen in the recent (overturned) ban on same-sex parenting books in Sydney.
More than 180,000 people are homeless in the cities of São Leopoldo and Novo Hamburgo alone. Cid Guedes / Shutterstock

Floods in south Brazil have displaced 600,000 – here’s why this region is likely to see ever more extreme rain in future

‘Flying rivers’ of moist air from the Amazon combined with a warming planet have the potential to produce more rain, say scientists.
Heavy seas engulf Block Island, the first US offshore wind farm. American Photo Archive/Alamy Stock Photo

Why cheap renewables are stalling

Plus, a better way to decarbonise the power sector.
Dust storm blowing off the Australian east coast over the South Pacific. Jeff Schmaltz/NASA GSFC

Floating robots reveal just how much airborne dust fertilises the Southern Ocean – a key climate ‘shock absorber’

Iron-rich dust feeds phytoplankton. They are a key form of life in the Southern Ocean, which acts as a climate shock absorber.
Sunday Abiodun, 40, a former poacher turned forest ranger, armed with a sword, looks for poachers inside the Omo Forest Reserve in Nigeria, 2023. Abiodun is now part of a team working to protect the Omo Forest Reserve, which is facing expanding deforestation from excessive logging, uncontrolled farming and poaching. (AP Photo/Sunday Alamba)

Protecting wildlife begins with understanding how best to counter wildlife crimes

Interventions to prevent crime against wildlife can be effective, but significant gaps in our knowledge remain.
Wildfire smoke traveling hundreds of miles caused hazy skies all the way to Virginia in 2023. AP Photo/Alex Brandon

Wildfire smoke is back – fires burning across Canada are already triggering US air quality alerts in the Midwest and Plains

States could be in for another summer of unhealthy wildfire smoke as ‘zombie fires’ resurface in western Canada and more blazes break out in the dry conditions.
A march for climate action in St. Peter’s Square at the Vatican in June 2015. Pope Francis praised the participants, who included Christians, Muslims, Jews and Hindus. AP Photo/Andrew Medichini

Vatican conference on ‘climate resilience’ is the latest in a long line of environment initiatives by Pope Francis and the Catholic Church – 5 essential reads

Pope Francis and other Catholic leaders committed to raising awareness of environmental issues draw on centuries of tradition.
La Niña typically means cooler, wetter conditions on average globally, but not everywhere, and not every time. Luis Robayo/AFP via Getty Images

La Niña is coming, raising the chances of a dangerous Atlantic hurricane season – an atmospheric scientist explains this climate phenomenon

After a year of record-breaking global heat with El Niño, will La Niña bring a reprieve? That depends on where you live and how you feel about hurricanes.

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