Top Stories of the Week: October 4-8

                                     A roundup of this week's top stories:

• The colours of the hydrogen rainbow

  Hydrogen is widely touted as an essential feature of the energy transition and on the road to net-zero as governments and businesses look to shift away from traditional fossil fuels and scramble to cut carbon emissions...

• EU mulls measures to mitigate energy "price shock", says Commissioner

  The EU is to present a raft of measures to help mitigate the worst effects of the record-high energy prices currently being seen across the continent, said the bloc's energy chief Kadri Simson during a plenary session with the European Parliament...

• Moderna plans African vaccine factory

  Moderna has unveiled plans to build a vaccine production plant in Africa that could help alleviate a burden off the shoulders of the states of developing countries who have thus far seen lacklustre support from developed nations against the...

• Ukraine slams Gazprom's Hungary deal, demands sanctions

  Ukraine has called on the US and Germany to impose sanctions on Russia's state-owned energy giant Gazprom following a deal the firm made with Hungary, depriving Kyiv of gas supplies and transit fees...

• Top miners make landmark pledge for net-zero by 2050

  Some of the world's top mining companies have pledged to reach net-zero direct and indirect carbon emissions by 2050 or before, according to the International Council on Mining and Metals (ICMM)...

• Vinci and partners launch green hydrogen fund

  French construction company Vinci, alongside partners TotalEnergies and Air Liquide, has launched a huge investment fund to look into the development of green hydrogen...

• Volvo Cars' $25bn IPO to be announced this week, say reports

  Swedish automaker Volvo Cars is finishing up plans for an initial public offering (IPO) in a deal that could be worth as much as $25 billion, according to a report in the Wall Street Journal...