"are making discoveries" is correct and usable in written English.
You can use it in a variety of contexts in which someone or a group is actively finding out something new. For example, "Scientists are making discoveries about the nature of the universe every day."
Each day, they are making discoveries that are radically expanding the knowledge of Bronze Age Britain.
None of these claims are without controversy, but astronomers who are making discoveries with NASA's Kepler spacecraft are meeting next week in California to review the first two years of their quest, which seems tantalizingly close to hitting pay dirt.
Social scientists all over the world are making discoveries relevant to managers and employees, and no one is tapping into them.
"Criminalize a teacher for using the word 'gay' when they're dealing with young people who are making discoveries about themselves?" he asked with awe, then broke into a smile and explained the popular video he made in response, which went viral in 2011.
The sense of discovery only comes when I'm making discoveries alongside the reader.
Soon this formidable woman is making discoveries and seriously embarrassing the police in the process.
It was officially opened on March 13th but has already been making discoveries, including the most intense bursts of star birth in the early universe.
Dipesh Chakrabarty, a historian at the University of Chicago, who has seen the book, said that since historians are not those who do the radiocarbon dating or the genetic analysis, they won't be making discoveries.
"It's really exciting, you're making discoveries and learning something new at all hours of the day and night".
When this play started, early estimates were that the group might be make discoveries that would yield 10 TCF (trillion cubic feet of gas).
Governor Rick Perry of Texas and President Barack Obama, strangest of bedfellows, are making similar discoveries about the scope of prosecutorial discretion.
