The Supreme Court’s oldest member — Justice Stephen Breyer — is expected to retire at the end of this term. POLITICO’s Alex Guillén breaks down Breyer’s rulings on environmental cases throughout his time on the high court and who might replace him.   Kelsey Tamborrino is a reporter covering clean energy and the host of POLITICO Energy podcast.  Alex Guillén is an energy reporter for POLITICO Pro.   Nirmal Mulaikal is a POLITICO audio host-producer.  Carlos Prieto is an audio producer for POLITICO.  Raghu Manavalan is a senior editor for POLITICO audio. Jenny Ament is the interim executive producer of POLITICO’s audio department. Learn more about your ad choices. Visit megaphone.fm/adchoices