MEXICO

Cavers and scientists in the Mexican state of Oaxaca discovered that the world's ninth-largest known cave is deeper than previously thought. With a depth of 5,118 feet, it houses dozens of species not found anywhere else.

BRAZIL

Archaeologists discovered a tooth from an opossum-sized creature that once inhabited what is now Brazil. The oldest known mammal found in the region to date, it lived sometime between 87 million and 70 million years ago, when Tyrannosaurus rex still roamed.

SCOTLAND

Microsoft has begun installing computer servers on the seafloor near Scotland's northern islands as an alternative to data farms on land. The idea is that the water will create a cool environment for the servers.

ZIMBABWE

The oldest African baobab tree (roughly 2,500 years of age) died within the past decade, researchers found. Nine of the 13 oldest baobabs—all in Africa—have perished since 2005, possibly as a result of unprecedented climate change.

CHINA

The Chinese government announced it will take on a new role in monitoring scientific misconduct. Such cases, previously handled by institutions, will be maintained in a national database and could disqualify scientists from applying for certain research opportunities and jobs.

INDIA

Solar power is on the rise in India. In the first quarter of 2018, newly installed panels produced 3,269 megawatts. Solar power now accounts for 6.3 percent of India's total power output.