For example, you can edit PDFs to modify, correct, delete, or add text and images; you can combine different PDFs into one, convert images to PDF, export files to Microsoft Word, Excel, or PowerPoint, ...
Chemical engineers at the Massachusetts Institute of Technology (MIT) have developed a catalyst that can convert methane into useful polymers, offering a potential approach to reducing greenhouse gas ...
Many users are looking for a free PDF editor alternative to Adobe. This is because the sheer number of features Adobe Acrobat holds can overwhelm anyone. Not to mention, it comes with a learning curve ...