Can Biodiversity Loss Be Stopped?

Cop15 will take place in Kunming (China). 'Delegates' are expected to commit to targets of protecting at least 30% of the oceans and the land by 2030 (https://www.theguardian.com/environment/2022/jan/19/expanding-national-parks-not-enough-to-protect-nature-say-scientists-aoe>). Thirty percent sounds impressive. Some delegates are likely, however, to simply opt to increase the sizes of already 'protected areas' like national parks. One also has to admit that, in some countries, protections seem to be largely notional and/or unenforced. What humans choose to protect can often seem somewhat arbitrary. More than 50 specialist scientists have analysed the draft UN Convention on Biological Diversity (CBD). The CBD is the working document for Cop15 and advocates the 'at least 30% figure'. The scientists conclude that expanding the protected areas to 30% would, if done well (a very big 'if'!), might help to slow the current rate of destruction of the natural world. They suggest, however, that much more would have to be done to stop the eventual collapse of the planet's ecosystems. Cop15 sounds like another opportunity for politicians to make 'pledges' whilst minimising meaningful action?