The Supreme Court ruled on three cases today.
In the most interesting decision, to me, the Court ruled that indigent inmates on death row have the right to federally provided counsel when seeking clemency in state courts. Harbison v. Bell
I'll just quickly quote from Jurist for the other two:
The Court ruled [opinion, PDF] 6-3 in favor of power companies in Entergy Corp. v. EPA [Cornell LII backgrounder; JURIST report] that Section 316(b) of the Clean Water Act [text, PDF] authorizes the Environmental Protection Agency (EPA) [official website] to use a cost-benefit analysis to determine what is the best technology available for minimizing adverse environmental impact from cooling water intake structures that draw water into power plants to offset the heat created during power generation....and
The Court ruled [opinion, PDF] 5-4 in 14 Penn Plaza LLC v. Pyett [Cornell LII backgrounder; JURIST report] that an employee may not bring a statutory anti-discrimination suit when the collective bargaining agreement (CBA) prohibits such suits in favor of arbitration.
Check out Jurist for more info on all three cases as well as links to the actual decisions.