What environmental issue caused Italy's Ventina Glacier to be monitored remotely?

The monitoring of Italy's Ventina Glacier remotely is primarily due to climate change. Climate change is causing global temperatures to rise, which has a significant impact on glaciers. As temperatures increase, glaciers begin to melt at an accelerated pace, leading to changes in their structure and volume. This situation calls for remote monitoring to track the glacier’s behavior and the rate at which it is melting. Such monitoring is vital for understanding the broader implications of climate change, such as rising sea levels and its effects on local ecosystems and water sources.

While glacial melting is a manifestation of climate change, the overarching issue of rising global temperatures and changing weather patterns is more directly tied to climate change as a cause. Therefore, the focus on climate change encompasses various aspects, including melting glaciers, making it the most comprehensive and accurate answer for this issue.