First Capital Connect, one of Britain's major train companies, has had to apologise after a staff member tweeted that man-made climate change was an "illusion".
The row began when a passenger tweeted at the rail firm, complaining that outdoor heaters were being used on a platform despite the mild weather.
Despite arguing that the heaters were designed to keep staff warm, the angry tweeter went onto explain that leaving them on could be a waste of energy, and contribute to climate change.
The company received a huge backlash on Twitter following the comment, with many asking for the rail firm's "scientific credentials" and whether the opinion was also the view of First Capital Connect.
Two hours later, however, the company put out a new tweet explaining climate change denying was not the view of the firm.
We apologise. This is NOT the view of FCC - we are very environmentally aware. We have new electric car points, and X2 number of bike racks.-- FirstCapitalConnect (@FirstCC) October 11, 2013
It also added:
Hi all. Ally here. Very embarrassed about what Jay said. That is not the view of FCC whatsoever! Will be having a chat with him.-- FirstCapitalConnect (@FirstCC) October 11, 2013
In a statement, FCC told the Huffington Post UK that it was "deeply sorry" about the incident.
"This ill-considered tweet did not in any way represent the views of the company and we are deeply sorry.
"The member of staff has apologised and made this clear. We care passionately about the environment - train travel is the greenest form of public transport and we are doing a huge amount to further reduce our carbon footprint and that of our passengers.
"This could not have come at a worse time for we are about to launch a Green Week initiative to tell people what we are doing and what they can do to help the environment. Clearly this member of staff needs to be the first one briefed."