At elevated temperatures, the BPA in polycarbonate will leach out over 50 times faster.

ECONOMIST: The plastics industry��s Pyrrhic victory

But the chemicals can leach out of plastic products and enter our bodies, where some scientists suspect they act like hormones.

NPR: New Safety Law Doesn't Mean All's Well In Toyland

There are a lot of materials in our environment, especially things - chemicals, that leach out of plastics - that we now know, become part of our food, and many of them have hormone effects.

NPR: 10 More Possible Triggers to Obesity

Women gather beans and other crops planted along the banks, leach the cyanide compounds out of manioc, a root that grows well in the poor soil, and then roast it to make a crunchy flour eaten throughout Brazil.

ECONOMIST: The Amazon's indigenous people

"People leave their doors open because it is hot weather and the kids are out playing and so often the dogs can get out easily, " said Mr Leach.

BBC: NEWS | UK | Wales | South East Wales | Mail campaign over dog attacks

They believe that when phosphate and arsenic compete with one another in the ground, arsenic is displaced out of the soil and can leach into water supplies.

BBC: By Helen Sewell of BBC Science

The home side hit 288-6, but Rob Foster (50), Joe Leach (44) and Tom Cox (40 not out) led the resistance, Shrewsbury finishing on 239-9.

BBC: Wellington and Whitchurch go up

They have made a bugaboo out of the chemicals in fracking fluids, which supposedly can leach into groundwater sources.

FORBES: Energy Under Our Feet