Filming © C. Dangleant, CIRAD

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Lycophytes, which appeared some 420 million years ago, are the oldest existing vascular plant group. For a long time, they dominated the forests of the ancient world, and took a broad range of forms, including several arborescent species more than 30 metres tall. Mass extinctions and competition with other plant groups led to the disappearance of these large specimens, and the only remaining members of the group are herbaceous forms no more than a few centimetres tall. These modern species are now being used as a model to study the evolution of terrestrial plants. © D. Barthélémy, CIRAD

Results & impact 29 June 2026

Viral fossils hidden in plant DNA reveal 300 million years of evolution

Health

Global health: a new methodological framework to confirm the elimination of disease vectors

Results & impact 24 June 2026

Global health: a new methodological framework to confirm the elimination of disease vectors

Health

Le Galion watershed in Martinique. © CIRAD

Just out 24 June 2026

Chlordecone in the French West Indies: building a One Health approach

Health

Rotting sargassum © J. Réminy, CIRAD

Science at work 17 June 2026

Sargassum control in the Caribbean

Territories and collective action

In Indonesia, buttress roots and a horizontal root, two types of roots with different functions (stability and water and nutrient transport), join forces to support and feed a tree © C. Jourdan, CIRAD

Just out 12 June 2026

Exploring roots

Tanguy Lafarge, Regional Director of CIRAD, and Muhammad Ibrahim, Director General of IICA, after signing the agreement. © IICA

Institutional news 10 June 2026

IICA and CIRAD renew strategic partnership to promote agroecological innovation and more sustainable agrifood systems in Latin America and the Caribbean