内容摘要：Hailey Bieber is selling her make-up brand Rhode to e.l.f. Beauty in a deal worth up to $1bn (£740m).

Hailey Bieber is selling her make-up brand Rhode to e.l.f. Beauty in a deal worth up to $1bn (£740m).

This has left the National Weather Service – NOAA's weather forecasting and hazard-warning branch – critically understaffed ahead of the hurricane season, several scientists told the BBC."I know that the people remaining are trying their absolute hardest to provide accurate forecasts, but when you're reduced to such few staff, it's going to lead to burnout," said Zack Labe, a climate scientist who was recently laid off by NOAA.

The office in Houston for example – Texas is particularly vulnerable to hurricanes – is effectively without itsOther offices are struggling to maintain 24/7 operations. Experts with contacts at NOAA told the BBC of battles to get basic maintenance over the line, from computer systems to toilets.US media widely reported last week that the National Weather Service was seeking to fill more than 150 key vacancies – from other positions within NOAA due to a ban on hiring new staff - ahead of the hurricane season.

BBC News has been unable to independently verify these reports, and has reached out to NOAA and the White House. Neither have responded to requests for comment."It's a huge problem, and it is a growing problem, and it is a problem that will likely, unless it is immediately resolved, become life threatening during severe weather events," said Daniel Swain, a climate scientist at the University of California, Los Angeles.

He said he feared the cuts so far were just "the tip of the iceberg".

– plane journeys into the storms as they approach land to inform preparations for landfall.East Antarctica appears, for now at least, more stable.

"We're starting to see some of those worst case scenarios play out almost in front of us," added Prof Stokes.Finally, scientists use computer models to simulate how ice sheets may respond to future climate. The picture they paint isn't good.

"Very, very few of the models actually show sea-level rise slowing down [if warming stabilises at 1.5C], and they certainly don't show sea-level rise stopping," said Prof Stokes.The major concern is that melting could accelerate further beyond "tipping points" due to warming caused by humans - though it's not clear exactly how these mechanisms work, and where these thresholds sit.