With new evidence that the concentration of greenhouse gases broke yet another record in 2014, the head of the World Meteorological Organization (WMO) warned on Monday that the warming planet is hurtling \u0022into uncharted territory at a frightening speed.\u0022The United Nations weather agency\u0026#039;s latest Greenhouse Gas Bulletin (pdf) reports that atmospheric concentrations of carbon dioxide (CO2) reached 397.7 parts per million (ppm) in 2014, substantially beyond the 350ppm level deemed \u0022safe\u0022 by scientists to avoid global warming.WMO Secretary-General Michel Jarraud said this means that we will \u0022soon\u0022 be living with globally averaged CO2 levels above the dangerous milestone of 400 ppm \u0022as a permanent reality.\u0022\u0022We can’t see CO2. It is an invisible threat, but a very real one,\u0022 Jarraud said. \u0022It means hotter global temperatures, more extreme weather events like heatwaves and floods, melting ice, rising sea levels, and increased acidity of the oceans. This is happening now and we are moving into uncharted territory at a frightening speed.\u0022The report further shows that concentrations of the most prevalent greenhouse gases reached new highs in 2014 with industrial, agricultural, and domestic activities driving dramatic increases since pre-industrial times. Carbon levels have increased 143 percent, nitrous oxide (N2O) is at 121 percent, and methane (CH4) reached an eye-popping 254 percent increase since 1750.\u0026nbsp;WMO warns that this \u0022relentless rise\u0022 is fueling climate change and \u0022will make the planet more dangerous and inhospitable for future generations.\u0022This latest bulletin comes just three weeks before the COP21 climate talks are set to begin in Paris, during which global leaders are expected to set international targets for greenhouse gas emissions.\u0022Every year we report a new record in greenhouse gas concentrations,\u0022 Jarraud continued. \u0022Every year we say that time is running out. We have to act NOW to slash greenhouse gas emissions if we are to have a chance to keep the increase in temperatures to manageable levels.\u0022The annual report also notes that the Earth\u0026#039;s rising surface temperature is driving another vicious cycle, where increased concentrations of water vapor, a short-lived greenhouse gas, further adds to the warming effect by trapping even more heat. \u0022The laws of physics are non-negotiable,\u0022 Jarraud added.