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International trade has benefited food security and biodiversity by leveraging the comparative advantages of countries (1), but the role of international trade stability in safeguarding ecosystems is often overlooked. Volatile food trade policies such as trade bans in response to the COVID-19 pandemic (2), export restrictions related to the Russia’s invasion of Ukraine (3), and import tariffs imposed by the Trump administration (4) have reshaped the food supply chain, leading to cascading effects on biodiversity loss through agricultural production (5), land use change (6), and natural resource use (7). Prioritizing trade policy stability and clarifying its connection to biodiversity conservation can offer a pathway toward improving both food security and ecological resilience.

Nature, Published online: 27 May 2026; doi:10.1038/s41586-026-10536-1 Engagement-based feeds amplify intergroup, moralized, emotional (IME) and toxic content relative to reverse-chronological feeds, and a diversified extremity algorithm reduces exposure to IME and toxic content while maintaining comparable platform enjoyment.

Nature, Published online: 27 May 2026; doi:10.1038/d41586-026-01636-z A large-scale experiment tested the impact of changing the Bluesky feed-ranking algorithm on political content and perceptions during the 2024 US presidential election. By making feeds more representative of users, the ‘diversified extremity’ algorithm reduced exposure to polarizing content and made perceptions of social norms more accurate, without reducing user enjoyment.

Nature, Published online: 27 May 2026; doi:10.1038/d41586-026-01628-z Global risks are too great for markets alone to curb. Political considerations must come before economic ones.