Here’s a look at the top stories making headlines on the “CBS Weekend News with Reena Ninan.” Source

New Zealanders have turned in more than 50,000 guns in the country’s gun buyback program. The government banned most assault weapons after a gunman killed 51 people at two Christchurch mosques in March. Source

Three murders in nine days in Austin, Texas, and little evidence to go on — did a man testing a thermal imaging camera inadvertently capture one of the killers? Source

In 2018, Shawn Gant-Benalcazar was convicted in the 2014 murder of Kathy Blair, and Timothy Parlin was convicted in the murders of Kathy Blair and Billie and Sidney Shelton. “48 Hours”‘ Maureen Maher sat down with each of them, hoping to get answers. Instead, both men claimed they were innocent – and pinned the blame on each other. Source

Six foreigners were arrested for allegedly smuggling drugs in Indonesia. Google settled a tax dispute in Australia. And the bodies of two people missing after New Zealand’s volcano eruption may never be found. Rylee Carlson rounds up these global news headlines from London. Source

In our World of Worship series, we’re exploring different ways people practice faith and religion around the globe. In this installment, we’re looking at one of the fastest growing religions in the world, the Bahá’í faith. There are now more than 100,000 Bahá’í communities worldwide. Dana Jacobson takes you on a journey to the “Mother Temple of the West.” Source

Seven presidential candidates took the stage for the final Democratic debate of 2019. They largely agreed on the problems America is facing, but not on how to solve them. CBSN political reporter Caitlin Huey-Burn joined CBSN from Los Angeles to talk more on the debate. Source

Boeing launched its new passenger spaceship on a critical test mission that could revolutionize American space travel. But the Starliner’s first flight without a crew encountered a big problem on the way to the International Space Station. Mark Strassmann reports. Source

Prosecutors in the United Kingdom announced on Friday that authorities have charged the wife of an American official over a crash that killed a teenager last summer. The woman, Anne Sacoolas, later left the country and returned to the U.S. claiming diplomatic immunity. CBSN’s Anne-Marie Green has details. Source

A pair of siblings have “upcycled” more than 500,000 plastic bottles to create eco-friendly swimwear. Source