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A theory that uses the mathematics of a drunken walk describes ecological invasions better than waves, according to Tim Reluga, associate professor of mathematics and biology, Penn State.

January 6, 2017 The public will be able to weigh in beginning Monday, January 9, on two proposals for new NOAA national marine sanctuaries in Wisconsin and Maryland that would protect nationally significant shipwrecks.

What with rising rainfall in the west, and hotter, drier summers in the east, British farmers place plenty of challenges from global warming, writes Anna Bowen. But there are also positive opportunities for agricultural innovators to adapt their farming systems to changing conditions, make their operations more resilient and sustainable, and make themselves part of the solution.

The new People Need Nature report - published to coincide with this week's annual Oxford Real Farming Conference - warns that modern farming practices are not good for wildlife. But they're not good for humans either. And with predictions that we will need to produce 70 per cent more food to feed a third more mouths by 2050 the question of seed ownership and diversity cannot be ignored. KATHRYN HINDESS reports

ANN ARBOR—When growing algae in outdoor ponds as a next-generation biofuel, a naturally diverse mix of species will help reduce the chance of crop failure, according to a federally funded study by University of Michigan researchers.