In tonight's edition: Three children are among 17 people killed in a toxic gas leak on the outskirts of Johannesburg. Authorities suspect that equipment used by illegal gold miners is linked to the accident. We also speak about Africa's energy landscape and unlocking green hydrogen opportunities in South Africa with renewable energy advisor Kelly Alexander. Finally, we see how dancing classes in Nigeria can help dance the blues away. The teacher believes salsa can help boost mental health in a country where talking about such issues is taboo.