| Balancing food security and nitrogen use |
| BALancing humAn and Natural resource use for Circular bioEconomy (BALANCE) |
| Barbara Willaarts |
| Bas van Ruijven |
| Beating the poverty trap |
| Behnam Zakeri |
| Bending the curve of biodiversity loss |
| Benedikt Soja |
| Benefits of IIASA membership |
| Benigna Boza-Kiss |
| Bettina Greenwell |
| Between 1.5°C and 2°C – the big impacts of half a degree |
| Between 1.5°C and 2°C — analyzing the global warming targets |
| BeWhere |
| Big Data and Systems Analysis |
| Bing Zhu |
| Binh Nguyen |
| Bintang Yuwono |
| Biodiversity from a Systems Perspective |
| BioGeoChemistry Management Model (BGC-MAN) |
| Blog |
| Brazil-EU Cooperation for Development of Advanced Lignocellulosic Biofuel (BECOOL) |
| Brian Fath |
| Brian Fath receives Board of Regents Faculty Award |
| BRIDGES |
| BRIDGES at ESOF-2020 |
| Bringing the impact of nutrient imbalance to global attention |
| Bruno Meirelles De Oliveira |
| Budapest Eurasia Forum 2020 |
| Building Arctic Futures: Transport Infrastructures and Sustainable Northern Communities (INFRANORTH) |
| Building fairness into decision making |
| Building fairness perspectives into climate policy |
| Building Global Funding Alliances |
| Building more fire-resistant housing in California |
| Building pathways to sustainability in a post-COVID world |