The Supreme Court is taking a rare excursion into environmental law to review three Clean Water Act decisions. See the AP article here. These cases will give the Supreme Court an opportunity to decide the scope of federal power in environmental cases. The decisions may also determine the reach of the Commerce Clause in other, non-environmental contexts.
After Aviall, and with possibly two new justices on the Court, almost nothing that the Supreme Court might decide in these cases would suprise me. It will be an interesting year.