More than seven months later, there is still no definitive answer for what caused the deadly condo tower collapse in Surfside, Florida. But some scientists are turning their attention to an overlooked threat: salt water rising up from underground, damaging the building’s foundation. NBC News’ Jon Schuppe reports. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews …

BRAIN TIME ► https://goo.gl/tTWgH2 1. Grappler Police Bumper (Preview) https://www.youtube.com/channel/UCP0rsN9d3-kaVGwRoAvbDMQ 2. RF Safe-Stop https://www.youtube.com/channel/UC4NuspFsP5AgBAtEGUyxklA 3. MobileSpike https://www.youtube.com/channel/UCCr2wIuxMHuAojgPYXnd4Xg 4. Surface Guard https://www.youtube.com/channel/UCfi9yZyoCTgq6WMwnxM7KSA 5. ArrestNet https://www.youtube.com/channel/UCUPGheTI9kGjCx7KB3QTDbA 6. CROOKHOOK https://www.youtube.com/channel/UC-_XmBLjdIuq9rrs9CR0wUQ 7. MVB-3X https://www.youtube.com/channel/UCMoTAZiv9pjrh0puc1h2Qwg 8. Net Barrier https://www.youtube.com/channel/UC9yzQ2gArCVu9CgD_tB9D6w https://www.youtube.com/channel/UCYlAwfKb2zLYmj7IJvAXuog 9. Tyre Killer https://www.youtube.com/channel/UCxtSfHh4PHf_-f9lTAw5VnA 10. Tire Stopper https://www.youtube.com/channel/UCvLftGuUGAhnTmbi1vFLOGg 11. PROSpike https://www.youtube.com/channel/UCptgEmNljZ6TS1oQO0-7HWw 12. Piranha https://www.youtube.com/channel/UCHsgrNe0N_JGrqpTEPVNzAg 00:00 – Grappler Police Bumper 01:15 – RF Safe-Stop 02:06 – …

Former U.S. homeland security adviser Tom Bossert discusses the role that China might play in easing the effects of sanctions on Russia. SUBSCRIBE to ABC News: https://bit.ly/2vZb6yP WATCH MORE on http://abcnews.go.com/ LIKE ABC News on FACEBOOK: https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #ABCN #UkraineCrisis #Russia Original source (ABC/Youtube)