web | David Rising | Associated Press | 2024-11-26 | |
web | Julia Horowitz | CNN Business | 2021-08-18 | |
web | Charles Riley | CNN Business | 2021-05-05 | |
web | Michel Penke | DW | 2021-04-13 | |
web | Luiza Ch. Savage | Politico | 2020-12-09 | |
web | Lotfi Belkhir | The Conversation | 2018-03-25 | |
web | Nicola Jones | Yale e360 | 2013-11-18 | |
web | David McFadden | Associated Press | 2013-01-16 | |
web | US Department of Energy | 2010-12-01 | ||
web | US Geological Survey (USGS) | 2002-11-20 |