Parts of the Delaware River have low dissolved oxygen levels caused by ammonia discharges from wastewater facilities.

These vapour pressure ... with strong gradients, 'data smoothing' will occur resulting in gridpoint values that may differ slightly from the exact vapour pressures measured at the contributing ...

While MSLP charts are good for estimating wind direction and strength over mid and high latitudes, in the tropics pressure gradients are weak and often don't give a good indication of the prevailing ...

Choose from Map Of Western Caribbean stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection ...

Photos from around the region, including readers' pictures, plus reports of disruption to schools and transport services as the Birmingham and the West Midlands deals with the snow ...