Population

Experts say our preoccupation with net overseas migration figures has distracted from a more meaningful discussion on the ‘scale of temporariness’Get our breaking news email, free app or daily news podcastAustralia should set immigration targets to achieve a “stable temporary population” to address the ballooning number of nonpermanent residents that has stretched the country’s public services and housing, a new report argues.Temporary migrants as a share of the total population has more than doubled over the past 15 years, from 2.7% in 2010, to more than 6%. Continue reading...

Marine Conservation Society warns that fish numbers have reached dangerous point of declineConsumers should “completely avoid” buying UK-caught cod, the Marine Conservation Society (MCS) has said, as it warned that populations have reached a dangerous point of decline despite zero-catch recommendations.The MCS, an environmental charity, publishes a Good Fish Guide to help consumers and businesses make sustainable seafood choices. Continue reading...

Woodcocks and pochard, pintail and goldeneye ducks among threatened species protected by proposalsHunters will be banned from shooting a rare and beautiful duck under new proposals to halt the decline of six British wild birds.The new rules would restrict the shooting of species including the distinctive woodcock, and the striking pintail, goldeneye and pochard ducks, all of which are classed as under threat and have seen their populations fall sharply in recent years. Continue reading...

The insects covered its largest area since 2018, despite threats from habitat loss, climate crisis and pesticidesThe population of monarch butterflies in Mexico increased 64% this winter, compared with the same period in 2025, offering a glimmer of hope for an insect considered at risk of extinction.The figures, released this week by the World Wildlife Fund (WWF) Mexico, showed that the area occupied by monarchs expanded to 2.93 hectares (7.24 acres) of forest from 1.79 hectares (4.42 acres) the previous winter, the largest coverage since 2018. Continue reading...

• A new study published in the journal Science documents that climate change is making fish smaller, posing significant threats to global food security and fishery productivity. • The research warns that the shift toward smaller fish species could worsen fishery losses by as much as 50%, impacting both commercial fishing industries and food availability worldwide. • The findings highlight the cascading ecological effects of climate change on marine ecosystems and underscore the urgency of addressing global warming to protect food systems.

An analysis of ancient and modern DNA suggests the extent of convergent evolution in different peoples around the world is even greater than we thought