Caroline Jones says she is not comfortable with the direction the party is taking.
A relief road would not cut congestion and is an old solution to the problem, a report says.
Ministers are urged to think of "shiny new" public transport projects instead of a new M4 relief road.
There are many better ways of teaching right from wrong, educational psychologists say.
Millions of acres of trees and energy crops will be needed to help the UK become carbon neutral by 2050, say scientists
The first major assessment of the state of the fungi kingdom says they are vital for life on Earth.
Regulator says providers should make it clear that the chances of success dwindle once a woman reaches 35.
A controversial vote to change how copyright works in Europe will be decided on Wednesday.
It's designed to help elderly immune systems develop a stronger defence against flu.
