Africa

10 results

Petites maisons colorées sur un bout de terre entourée de mer

Islands and island environments faced with global changes

Openness to the outside world, incorporation within the global economy but also the growth in natural risks and rising sea levels.... With their unique characteristics, often under threat, island environments and communities are today faced with unprecedented destabilising factors.

Health in Transition

It is no longer rare for inhabitants of the Global South to die from cancer or diabetes. In these regions, non-communicable diseases now cause more deaths than infectious ones. This is due to changing diets and new—more urban and industrialised—lifestyle habits. Populations must also cope with the...

Leaving poverty behind: microcredit or unconditional gifts?

Sujet
During the International Year of Microcredit in 2005, the World Bank presented microcredit as an effective tool for fighting hunger and extreme poverty. Thirteen years later, what can we say on the subject? Does microcredit help raise people out of poverty? If not, what are the gaps in its...

Marc-Antoine Pérouse de Montclos : Theories and battlegrounds in Africa

As an expert on African issues, the political scientist Marc-Antoine Pérouse de Montclos is particularly interested in the armed conflicts breaking out on the continent and their consequences for people living there. Enjoy this interview with someone who loves their work and doesn’t hesitate to go...
trois-jeunes-indiennes-vues-de-dos

How the world deals with abortion

Voluntary termination of pregnancy is the subject of ideological debate as well as health policies. Demographer Agnès Guillaume, co-author with Clémentine Rossier of an extensive review of the subject*, sheds light on the right, access to and practice of abortion in the world today.
black-bass

Biodiversity of freshwater fish in turmoil

In the last few centuries, 15% of new fish species have been introduced by Man into rivers across the world. Researchers have found that these introductions alter the ecosystem to a much larger extent than originally anticipated.
Fruit trees and legumes combined with food crops

Carbon storage: what matters is the input!

After 15 years of climate smart agricultural practices in Madagascar, researchers are categorical: while these alternative methods help increase soil carbon storage, their effectiveness varies substantially. The assessment must therefore be carried out on the scale of the territory.
Root nodules of Discaria (Order: Rosales), a non-legume species capable of nitrogen-fixing symbiosis.

Nitrogen-fixing symbioses reveal themselves

Recent research has revealed the origin and evolution of symbiotic relationships between certain plants and soil bacteria in order to use atmospheric nitrogen. This knowledge could ultimately contribute to the development of sustainable agriculture minimising the use of chemical fertilisers.
The fruit clusters of Coccoloba uvifera give it its nickname of sea grape.

Unwavering symbiosis

Research conducted on the introduction of a tree from extreme environments into the sand dunes of Senegal shows its solid relationship with a fungus. This fungus naturally accompanies the tree from its environment of origin, on the other side of the Atlantic.
aedes-albopictus

The Asian tiger mosquito enjoys car journeys

Original research shows the role of car journeys in the spread of the Asian tiger mosquito in Europe. Accustomed to freight transportation, this invasive species also uses passenger vehicles to propagate. It is seemingly found in 5 out of 1,000 cars.