NAIROBI, Kenya (AP) — Before sunset, a blue flame used to spring to life in Brenda Obare’s kitchen with a quick turn of the knob as she started dinner. Now, her stove is often cold as she crouches over a charcoal burner, coaxing a smoky fire to cook for her family outside her tin-roofed home in Kibera in Kenya’s capital Nairobi, one of Africa’s largest informal settlements. Cooking gas is too expensive and often unavailable. Charcoal is always there. “We don’t have many options,” she said. “You use what you can afford.” Stories like hers are becoming more common because of the energy disruptions caused by the Iran war. Governments had promoted cleaner fuels like LPG for health and conservation reasons, but rising costs are undermining those gains. The impacts are spreading beyond gas pumps to kitchens, forests, and wildlife habitats.…