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An investigation into the cause of faulty batteries that led Samsung Electronics to pull all of its Galaxy Note 7 smartphones last year found that some batteries were irregularly sized. WSJ's Lee Hawkins explains.

WWF Australia released video footage of a ?vital? annual coral spawning occurring at Lizard Island in the Great Barrier Reef during November 2016. According to the WWF: "Each year corals synchronise the release of trillions of eggs and sperm. The baby coral polyps created during the spawning event drift to the bottom and take hold, helping a reef to grow or rebuild. ?We sent a camera to film the annual spawning event at Lizard Island late last year, but there was almost nothing to see. The spawning was reduced by coral bleaching, an impact of climate change.? In November 2016, the ARC Centre of Excellence for Coral Reef Studies reported ?northeast reefs experienced an average loss of 67 per cent of its shallow-water coral in the past eight to nine months?. Credit: YouTube/WWF-Australia via Storyful

LinkedIn has given its confusing and cluttered site a makeover. WSJ's Joanna Stern has a first look and some tips. Photo/video: Drew Evans/The Wall Street Journal.

Ginni Rometty, CEO of IBM, said that she believes that believes artificial intelligence will help to create jobs and that clients will have a "symbiotic relationship" with AI.

Ideal Conceal CEO Kirk Kjellberg tells FOX the story behind why he invented a gun that looks like a smartphone. Courtesy: FOX Business