On Business Weekly, we hear how internal research at Facebook found that social media was harming the mental health of teenage girls. In the UK, the Royal Society of Public Health is calling for social media companies to identify which pictures have been digitally altered. Also, green investing or green washing? We hear from a former Blackrock investment officer who says corporate social responsibility policies are not helping to create a carbon-zero economy. Plus, our correspondent in Kenya goes stargazing to learn how African tourism operators are trying to attract domestic customers and diversify their businesses. And, as Broadway theatres reopen, we find out how the first night went - and what the future may hold. Business Weekly is presented by Lucy Burton and produced by Matthew Davies.

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