Shell says it has ` ` a clear path forward '' for drilling off Alaska . A court ruling last year set back the project . Shell began drilling in 2012 but abandoned 2013 after several snags . Environmentalists protested Thursday 's ruling .
Shell says it lacks `` a clear path forward '' for drilling off Alaska . A court ruling last week set back the project . Shell began drilling in 2012 but skipped 2013 after several snags . Environmentalists cheered Thursday 's ruling .