DAKAR, Senegal ? As the world has watched with fear and fascination the fires burning in Brazil's Amazon rainforest, satellite images show a far greater number of blazes on the African continent. NASA has called Africa the fire continent, home to at least 70% of the 10,000 fires burning worldwide on an average August day, though the agency says the number of fires is consistent from year to year. While French President Emmanuel Macron has said he is considering launching an international campaign to help sub-Saharan African countries fight fires, experts say the...