Read these quotations from the two articles. Living Alone Is the New Norm Will Wi-Fi Ruin Mount Everest?
On the contrary, the evidence suggests that people who live alone compensate by becoming more socially active than those who live with others and that cities with high numbers of singletons enjoy a thriving public culture. This 3G network will undoubtedly save lives—not only by providing weather information and support to Everest climbers and trekkers, but as an alert system for the nearby villages threatened by flash floods from Glacial Lake Overflow (GLOF), another peril caused by global warming.
The tone of both quotations can best be described as —

guarded
guarded

surprised
surprised

incredulous
incredulous

positive
positive