Russia says Ukraine and its allies are planning a "dirty" weapons attack. The US says that's false. But what are these weapons and who has them?

Mark Vande Hei, who is set to break the US single spaceflight record, will be riding a Russian capsule back to EarthRussia-Ukraine war.

EU research ministers signed a declaration laying out common principles and values for international cooperation in research and innovation in Marseille on Monday, but these rules arrive as the rapid pace of geopolitical change threatens to render them useless in selecting scientific collaborators from outside the EU.

As extreme weather events become commonplace, threatening communities and economies across the world, the UN is helping policy-makers and leaders by projecting the impact of future climate hazards, and recommending the best, most cost-effective ways to adapt.

The world is failing to tackle the persisting and increasingly serious global crisis of depression it is facing, according to a Lancet and World Psychiatric Association Commission on depression, which calls for a whole-of-society response to reducing the global burden of depression.

The EU urgently needs better intelligence about China's science and technology system to avoid being taken advantage of, warns a new report.

Countries and universities are once again engaged in a war for talent over researchers, entrepreneurs and students as the world emerges in fits and starts from a pandemic-induced slowdown in international migration.

The decision to appoint a board of advisors is welcome - and urgent, given the twin challenges of COVID and climate change.

A new US strategy to expand international science diplomacy gathered speed, as the Biden administration announced collaborations with the Swiss and Canadians, and upcoming discussions with France, Japan and other science partners.

The aim is to help Swiss and US researchers carry out projects with partners in the respective countries.

Results from some of the innovative EU-funded research that help us to better understand the major political issues of the day and provide recommendations for policymakers, citizens and other organisations to better respond to the threats facing European democracy.

The OECD has published a study that makes nine recommendations to improve the situation of academic careers.

Concerns about a "new Cold War" over science and technology are a major reason behind the creation of a new think tank that looks out for future advances and development.

The European People's Party (EPP) is calling on the Commission and member states to fund emergency placements for Afghan researchers and academics at European higher education and research institutions. One of the EPP's lead MEPs, Christian Ehler, said scientists in Afghanistan risk being persecuted by the Taliban, after the islamist group took over the country when the US military and its allies pulled out.

Governments and companies urgently need to share data on the mounting volume of satellites and debris orbiting Earth.

Policy makers and lobbyists in Brussels want to explicitly limit access for scientists in countries that flout academic freedom and intellectual property rights.

International financial institutions say that vaccines are the highest-return investment on Earth - it is past time for them to pay up.

Pressing global challenges including the climate emergency, biodiversity loss, food security and future global health crises will require collaboration.

It could take years to reveal the true impact of closed borders, cancelled travel plans and vaccine delays.

Rivalry between China and other countries could diminish global scientific collaboration - just when it is most needed.