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The ten-year efforts of the Kaydara Agroecology School Farm, in Senegal, led to concrete benefits for the community and for the environment. Gora Ndiaye, founder of the "African Gardens" association, summarizes the some important features of the project.
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Researchers have offered a chemical explanation for sex change in a tropical fish. ↓↓More info and references below↓↓
For a tropical fish called the bluehead wrasse, sex isn’t always permanent. When a group of the fish loses its dominant male, the biggest female rapidly changes sex, taking on distinctive male coloring and producing mature sperm in as little as 8 days. Although this change is well documented, the molecular mechanisms that drive it have remained unclear. Now, an international group of researchers has offered a chemical explanation for the transformation after analyzing tissue samples from transitioning fish.
Read more:
Stress, novel sex genes, and epigenetic reprogramming orchestrate socially controlled sex change | Science Advances
https://advances.sciencemag.or....g/content/5/7/eaaw70
Music: “English Country Garden” by Aaron Kenny.
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This is the story of oil and gas exploration in the Caribbean and the role played by Trinidad and Tobago in the world's quest for "black gold." The oil industry shapes our lives, rules our economies, and influences our political society. Beginning in 1595, the need only grew for locally available pitch in the Caribbean, and Trinidad and Tobago's reputation began to spread around the world.
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Intervention, le 31 octobre 2019, de Pr. Théophile Obenga lors de l'ouverture du 3ème colloque sur les mathématiques africaines à Baie-Mahault (Guadeloupe).Playlist du colloque: https://www.youtube.com/playli....st?list=PLXR5OhZxsoD
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