Plaid Cymru has condemned the government's failure to invest in renewable energy and insisted that the Welsh Assembly must have powers over energy projects.
Green Party leader Caroline Lucas has attacked the new Labour leader Ed Miliband, suggesting he is failing to live up to his reputation as an environmentalist.
Welsh politicians have called for the people of Catalonia to be allowed to determine their own future after a Spanish court over-ruled decisions on autonomy.
There has been more than a fifty percent drop in the amount of National Lottery money granted to sports groups in Wales in the five years since the 2012 Olympics were awarded to London.
Plaid Cymru and the SNP have said they offer the only “real alternative” on nuclear arms, pointing out that the Liberal Democrats would replace Trident with a different nuclear system.
Plaid Cymru's election candidates have signed a pledge promising to stand up for the needs of pensioners. They said that a “living pension” is needed more than a nuclear weapons system.
The Scottish National Party (SNP) have launched their manifesto, urging voters to reject the “cuts agenda” of the Labour, Conservative and Liberal Democrat parties.