New Scientist's "This week's new questions" column raises two separate puzzles. The first asks which animal has the most sensory access to reality, inviting speculation about how different creatures perceive the world. The second asks why carbon dioxide is still used to put the fizz in water and soft drinks, given its worldwide environmental impact.
The two questions are unrelated, and the source does not answer either one. It only presents them as open items for readers to consider. Because no findings or expert responses are included, the article cannot report conclusions—only note that these questions remain active.
Still, the pairing is telling. One question looks outward at animal perception; the other looks inward at a common consumer product. Both touch on how living things interact with their environment, but the source leaves the connections and answers to its readers.