The case for optimism, why artificial intelligence poses risks and more in this week’s #TheEdit.

• Why has NASA built a giant new rocket? NASA’S new rocket, the Space Launch System (SLS) is sparking debate on the flourishing private-sector space industry – The Economist
• The views from the top. Photos of remote structures around the world show the observatories, monasteries, castles and more that were built high atop mountains, cliffs, and stone pillars – The Atlantic
• We need to talk about how good A.I. is getting. We’re in a golden age of progress in artificial intelligence – The New York Times
• The subtle power of cheerfulness. A cheery mood might seem like a self-absorbed response to serious times. But history tells us otherwise – Aeon
• What happens to a family when rivers run dry? Corey Robinson’s short documentary follows a Nepali family grappling with the personal side of climate change – New Yorker

• How business leaders can foster better disability inclusion. From inclusive policies to role models, senior management has the power – and responsibility – to make work better for those with disabilities – Raconteur
• Why facts don’t change our minds. New discoveries about the human mind show the limitations of reason – The Beautiful Truth