Sustrans Cymru says councils could tax firms for staff spaces to raise money for public transport.
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Eleanor Gruffydd-Jones
BBC Sunday Politics Wales
BBC News Science & Environment
Volunteers needed to spot bug's 'spittle'
Scientists want thousands of volunteers to help record sightings of "spittle" and spittlebugs across the UK.
Top Stories
Volunteers needed to spot bug's 'spittle'
Scientists want thousands of volunteers to help record sightings of "spittle" and spittlebugs across the UK.
Students walk out in global climate strike
From Australia to Europe, school children are skipping classes to call for action on climate change.
'Sabotaged' tanker in Gulf of Oman leaked oil
A satellite spotted an oil slick trailing from a tanker mysteriously attacked off the UAE on 12 May.
Three more die on Everest amid overcrowding
Seven have died climbing the world's highest peak in a week - more than for the whole of last year.
The man who made Einstein world-famous
UK astronomer Arthur Eddington proved the German-born physicist's theory of relativity in May 1919.
SpaceX puts up 60 internet satellites
The California firm launches the first spacecraft in its multi-billion-dollar broadband project.
'How can I help fight climate change?'
You sent us thousands of questions about climate change. Here are some answers to the most common.
Featured Contents
Volunteers needed to spot bug's 'spittle'
Scientists want thousands of volunteers to help record sightings of "spittle" and spittlebugs across the UK.
Students walk out in global climate strike
From Australia to Europe, school children are skipping classes to call for action on climate change.
'Sabotaged' tanker in Gulf of Oman leaked oil
A satellite spotted an oil slick trailing from a tanker mysteriously attacked off the UAE on 12 May.
Three more die on Everest amid overcrowding
Seven have died climbing the world's highest peak in a week - more than for the whole of last year.
The man who made Einstein world-famous
UK astronomer Arthur Eddington proved the German-born physicist's theory of relativity in May 1919.
SpaceX puts up 60 internet satellites
The California firm launches the first spacecraft in its multi-billion-dollar broadband project.
'How can I help fight climate change?'
You sent us thousands of questions about climate change. Here are some answers to the most common.
Students walk out in global climate strike
From Australia to Europe, school children are skipping classes to call for action on climate change.
'Sabotaged' tanker in Gulf of Oman leaked oil
A satellite spotted an oil slick trailing from a tanker mysteriously attacked off the UAE on 12 May.
Three more die on Everest amid overcrowding
Seven have died climbing the world's highest peak in a week - more than for the whole of last year.
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Gwyneth Rees
BBC News
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