You can't possibly, with any level of certainty, attribute impacts to wildlife as being caused by climate change or something else. You just can't. There is so much inherent and random variation in weather, and so many other things that impact wildlife.
If you watch that video I posted, Kerry confirms that current CO2 levels are like 400 PPM. However, when pressed, he also confirms that levels were over 2,000 PPM in the distant past and life didn’t end on earth.
- They have no way to determine what level of PPM triggers changes in climate.
- They have no way to enforce global adoption of emissions cuts
- They have no idea if hitting arbitrary targets will have any impact on climate
- They only have initiatives to reduce emissions that are estimated to cost $1 quadrillion dollars
- These same initiatives are already creating energy crises and threatening the national security of the US and it’s allies