Prime Minister(PM) Narendra Modi released a commemorative coin and postage stamp to mark the 400th birth anniversary of the 9th Sikh Guru Tegh Bahadur.
World Heritage day is being celebrated every year on 18 April to preserve the human heritage and recognise the efforts of all the relevant organisations in the field.
Sweden has launched a pilot project to reduce the carbon emissions involved in steel production by switching some of the processes from burning coking coal to burning hydrogen.
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