Charitable donations to natural disasters: evidence from an online platform
研究大型在线平台上自然灾害慈善捐赠的需求与供给，发现大部分捐赠集中在少数严重且受媒体关注的灾害，而96%的灾害（占80%伤亡）无人筹款；捐赠及时但会被大型灾害挤出两个月内的其他灾害救助。
Abstract We investigate the demand and supply of charitable donations to natural disasters on a large online platform. We document that the bulk of charitable donations goes to a tiny fraction of natural disasters, which tend to be severe disasters that receive media coverage. Charities do not fundraise for the remaining 96% of disasters, which account for 80% of casualties. Using an event study-type design to explore temporal patterns in charitable donations, we find that fundraising and giving for disaster relief occur in a timely fashion, but that both are effectively absent for disasters that occur within a 2-month window of large disasters which have attracted massive funding. We also find no evidence that donations to disasters crowd out those to other charitable causes.