TPM’s Managing Editor, David Kurtz, is in attendance for today’s oral arguments at the Supreme Court in what is likely to be the decisive case for marriage equality nationwide – and perhaps by extension LGBT equality writ large.

At 4 PM EDT, he’ll be in The Hive (sub req) taking your questions on the proceedings.

Gregor Macdonald, the writer behind our TPM Prime series The Renewables, will be in The Hive(sub req) tomorrow at 2 p.m. EST to chat about his series and all things energy. He’s an independent journalist covering the energy sector who has written for The Economist Intelligence Unit, The Financial Times of London, The Harvard Business Review, The Oil Drum, The Petroleum Economist, etc.

About a month ago, TPM published the first of Gregor’s 5-part series on the rapid rise of renewables in the global energy market. We’ve since published part two, and part three will be published tomorrow (Tuesday). The pieces deal with the changing energy mix in the US as solar and wind dominate marginal additions to the powergrid, and aging fossil-fuel power retires. Check it out and drop in your questions for Gregor about renewable energy, the economics and policy surrounding it, etc. at or before 2 p.m. EST.

Elizabeth (Liza) Goitein on Wednesday at 1 p.m. Eastern will join The Hive (sub req) to answer your questions about national security, including how Congress should reform NSA surveillance.

Goitein co-directs the Brennan Center for Justice’s Liberty and National Security Program. Before coming to the Brennan Center, Liza served as counsel to U.S. Senator Russell Feingold, Chairman of the Constitution Subcommittee of the Senate Judiciary Committee. As counsel to Sen. Feingold, Liza handled a variety of liberty and national security matters, with a particular focus on government secrecy and privacy rights.

Her writing has been featured in major newspapers including The New York Times, The Washington Post, Boston Globe, the San Francisco Chronicle, Wall Street Journal and the Philadelphia Inquirer, as well as prominent outlets such as Roll Call, the National Law Journal, and the Huffington Post.

Feel free to drop in your questions at or before 1 p.m. on 4/15. This chat will be moderated by TPM.

Mark Schmitt joins The Hive today to chat about the early reform rhetoric we are already hearing regarding 2016 (sub req), his recent paper on a new framework for democratic reform and any other topics you are interested in. Schmitt is the director of the program on political reform at the New America Foundation — in this capacity he develops new approaches to understanding and reforming the market for political power.

A prominent writer on politics and public policy, with experience in government, philanthropy and journalism, he is also a columnist for The New Republic and a leading voice on political reform, budget and tax policy, and social policy.

Please feel free to drop in your questions at or before 2 p.m.! This chat will be moderated by TPM.

Mark Schmitt joins The Hive tomorrow to chat about the early reform rhetoric we are already hearing regarding 2016 (sub req), his recent paper on a new framework for democratic reform and any other topics you are interested in. Schmitt is the director of the program on political reform at the New America Foundation — in this capacity he develops new approaches to understanding and reforming the market for political power.

A prominent writer on politics and public policy, with experience in government, philanthropy and journalism, he is also a columnist for The New Republic and a leading voice on political reform, budget and tax policy, and social policy.

Please feel free to drop in your questions at or before 2 p.m. on 4/7! This chat will be moderated by TPM.

Slice contributor Samhita Mukhopadhyay will join The Slice’s editor Nona Willis Aronowitz Thursday at 1 p.m in The Hive (sub req) to chat about the intersection of race, gender, and politics. Mukhopadhyay is a writer and former executive editor of Feministing.com. She’s the author of Outdated: Why Dating Is Ruining Your Love Life and contributed this piece on Mindy Kaling and race to The Slice. She is passionate about race, gender politics, technology and the media.

Slice contributor Samhita Mukhopadhyay will join The Slice’s editor Nona Willis Aronowitz Thursday at 1 p.m in The Hive (sub req) to chat about the intersection of race, gender, and politics. Mukhopadhyay is a writer and former executive editor of Feministing.com. She’s the author of Outdated: Why Dating Is Ruining Your Love Life and contributed this piece on Mindy Kaling and race to The Slice. She is passionate about race, gender politics, technology and the media.

Natan Sachs will be joining The Hive to chat (sub req) about the Israeli election results, Israel’s reactions to the Iran negotiations and the future of U.S.-Israeli relations.

Sachs is a fellow at the Brookings Institution’s Center for Middle East Policy. His focus is on Israeli foreign policy and the Arab-Israeli conflict — he taught a course about the conflict in Georgetown’s Security Studies Program — and he is currently writing a book on Israeli grand strategy and its domestic origins.

Please get your questions in early and then join us at 1 p.m. Friday in the Hive. TPM will moderate the chat.

Sahil Kapur, TPM’s expert in all things Capitol Hill, will take questions from Prime members (sub req) today at 1 p.m. EST in The Hive. Come chat with him about coverage of the Supreme Court case on Obamacare, the anti-abortion provision of the anti-human-trafficking bill, the Loretta Lynch nomination, the new House Republican budget.